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"Six-year-old Twitter is a remarkably different animal than it was when co-founder Jack Dorsey sent the service's first tweet in March 2006: \"just setting up my twttr,\" he wrote.\nA minuscule user base grew into today's 140 million-strong active tweeters, who at last count send more than 1 billion tweets every three days.\nTo keep the social media powerhouse intact as more people, celebrities and world leaders find their roles in the birdcage, Twitter has evolved its aesthetics, functionality and business model. Below, we gathered the best moments in Twitter\u2019s eventful existence to help you reminisce. \nSix Years of Twitter Flashbacks\nMarch 2012: Twitter turns 6, Dorsey tweets impressive stats and high-profile users wish the company well.\n\nIt's 12:50. Happy 6th Birthday @Twitter. From 1 tweet to over 1 billion every 3 days. I'm so proud of our users and our team.\n\u2014 Jack Dorsey (@jack) March 21, 2012\n\n\nHappy 6th birthday @Twitter! Few 6 year olds can claim such a major impact on our world. Can\u2019t wait to see what you do at 10 cc: @Jack\n\u2014 Mike Bloomberg (@MikeBloomberg) March 21, 2012\n\n\nHappy Birthday Twitter! remarkable company that's helped change the news biz and the world. Congrats to @jack and all friends at Twitter.\n\u2014 Rupert Murdoch(@rupertmurdoch) March 21, 2012\n\nTwitter also injects more ads, a primary revenue generator, into its mobile products.\nFebruary 2012: Twitter experiences massive simultaneous-tweeting from users as records for top tweets-per-second moments continue to be broken. Two Super Bowl moments this month slip into the number 2 and 3 slots. Twitter reaction reaches 12,233 tweets per second (TPS) at the end of the Giants vs. Patriots game and 10,245 TPS during Madonna\u2019s halftime performance. Last year's most-tweeted moment at the Super Bowl hit 4,064 TPS. \n\n\nThe 15 Most-Tweets-Per-Second Moments\n\n\n\n\n\n\n\n1. Castle in the Sky on TV\n\nAnime movie Laputa: Castle in the Sky was televised in Japan on Dec. 9, 2011. The movie was made in 1989 by famed director Hayou Miyazaki, who also directed Spirited Away and Princess Mononoke.\nDuring one point in televised broadcast in 2011, viewers joined forces, sending tweets at the same time to symbolically help the movie's characters cast a spell.\nData compiled by Brian Anthony Hernandez; gallery created by Chelsea Stark.\nImage courtesy of che_fox, Flickr.\n\n\n\n\n\n\n\n\n\n\n\n2. Euro 2012 Finals\nTwitter reported that as Spain scored the winning goal against Italy in the 2012 European Championship, 15.358 tweets per second were sent out on July 1, 2012, as soccer fans either celebrated the victory or languished in the defeat of the finals.\n\nImage: iStockphoto,  talymel\n\n\n\n\n\n\n\n\n3. Last Minutes of Super Bowl XVLI\n\n\nThe New York Giants narrowly defeated the New England Patriots \u2014 21-17 \u2014 with the Giants taking the lead on a touchdown with 57 seconds left on Feb. 5, 2012. The Patriots never recovered.\nImage courtesy of Charlie Lyons-Pardue, Flickr\n\n\n\n\n\n\n\n\n\n\n\n4. Madonna's Super Bowl Halftime Performance\n\n\nMadonna sparked an impressive amount of tweets during her 2012 Super Bowl halftime show, attracting an average of 8,000 TPS during a five-minute span on Feb. 5, 2012. Guest performers include Nicki Minaj, M.I.A. and Cee Lo Green.\nImage courtesy of village9991, Flickr.\n\n\n\n\n\n\n\n\n\n\n\n5. Tim Tebow's Overtime Touchdown Pass\n\n\nDuring the AFC wild-card playoff game on Jan. 8, 2012, Denver Broncos quarterback Tim Tebow threw a touchdown pass to Demaryius Thomas in overtime to upset the Pittsburgh Steelers 29-23.\nImage courtesy of StefanRalle, Flickr.\n\n\n\n\n\n\n\n\n\n\n\n6. Beyonce at the VMAs\n\n\nAt the MTV Video Music Awards on Aug. 28, 2011, Beyonce sang \u201CI want you to feel the love that\u2019s growing inside me,\u201D confirming she and husband, Jay-Z, would be having a baby. At the end of the song, she dropped her mic, unbuttoned her top and rubbed her baby bump.\nBlue Ivy was born Jan. 7 and immediately made a vocal cameo in Jay-Z's song \u2014 \u201CGlory\u201D (listen here).\nImage courtesy of bananawacky, Flickr.\n\n\n\n\n\n\n\n\n\n\n\n7. Execution of Troy Davis\n\n\nOn Sept. 20, 2011, Twitter caught fire in a last-minute effort to save convicted murderer Troy Davis from execution. Davis, who was sentenced to death for the 1989 murder of an off-duty police officer in Georgia, was put to death the next day.\nImage courtesy of Daquella manera, Flickr.\n\n\n\n\n\n\n\n\n\n\n\n8 and 9. FIFA Women's World Cup\n\n\nOn July 17, 2011, the World Cup set two new records for number of tweets sent per second: the end of the final match between the U.S. and Japan as well as the Paraguay vs. Brazil game.\nImage courtesy of Richard_Of_England, Flickr.\n\n\n\n\n\n\n\n\n\n\n\n10. Steve Jobs Resigns\n\n\n\u201CI have always said if there ever came a day when I could no longer meet my duties and expectations as Apple\u2019s CEO, I would be the first to let you know. Unfortunately, that day has come,\u201D Steve Jobs wrote in a resignation letter on Aug. 25, 2011.\nImage courtesy of leolambertini, Flickr.\n\n\n\n\n\n\n\n\n\n\n\n11. New Year's Day in Japan\n\n\nAs the clock passed midnight on the first day of 2011, Twitter users in Japan turned to Twitter to wish the world a Happy New Year. Twitter use increased immensely across the globe as each time zone entered 2011.\nImage courtesy of jurvetson, Flickr.\n\n\n\n\n\n\n\n\n\n\n\n12. BET Awards Gaffe\n\n\nThe BET Awards on June 27, 2011, featured heavy social media integration before and during the broadcast. But what set viewers off was the awkward series of events surrounding the Viewer\u2019s Choice Award reveal. Because of technical difficulties, contest winner Tiffany Greene declared Chris Brown the winner but then said the award actually belonged to Rihanna.\nImage courtesy of self_tv, Flickr.\n\n\n\n\n\n\n\n\n\n\n\n13. UEFA Champions League\n\n\nBarcelona defeated Manchester United, 3-1, in the final match on May 28, 2011.\nImage courtesy of iStockphoto, SOMATUSCANI\n\n\n\n\n\n\n\n\n\n\n\n14. Steve Jobs Dies\n\n\nSteve Jobs died Oct. 5, 2011, and many fans discussed his passing through tweets. The hashtag #RIPSteveJobs immediately became a trending topic. Since his passing, the world \u2014 including U.S. President Barack Obama, Microsoft\u2019s Bill Gates and Facebook\u2019s Mark Zuckerberg \u2014 has mourned his death and celebrated his achievements.\nImage courtesy of !efatima, Flickr.\n\n\n\n\n\n\n\n\n\n\n\n15. NBA Finals Lebron Tweet\n\nAfter the Miami Heat lost the NBA Championships on June 13, 2011, press conference comments along with a tweet from LeBron James sparked a firestorm of responses via Twitter. His tweet said, \u201CThe Greater Man upstairs know when it\u2019s my time. Right now isn\u2019t the time.\u201D Most replies were negative.\n\n\n\n\n\n\n\n\n\n\n16. Japanese Earthquake and Tsunami\n\n\nTwitter turned into an emergency go-to service for many following an 8.9 magnitude earthquake and subsequent tsunami on Japan\u2019s coast on March 11, 2011. Tweet-o-Meter reported that 1,200 per minute were coming from Tokyo when the phone system\u2019s went down.\nImage courtesy of U.S. Pacific Fleet, Flickr.\n\n\n\n\n\n\n\n\n\nJanuary 2012: Research aggregator eMarketer estimates Twitter generated $139.5 million in ad sales in 2011.\nDecember 2011: Twitter unveils a major redesign and way for content creators to embed tweets. \n\n\n\n\nOctober 2011: New York City Mayor Michael Bloomberg welcomes Twitter's new NYC office, joining Twitter co-founder Jack Dorsey at the office space at 340 Madison Ave. Dorsey says NYC has the most users out of any other city in the world. Twitter launches an advertising blog and Twitter feed.\n\nOpening the @twitter NYC office with @jack\n\u2014 Mike Bloomberg (@MikeBloomberg) October 6, 2011\n\nSeptember 2011: Twitter hits 100 million active users, who help send roughly a billion tweets every five days and 230 million tweets every day. Those users get a spiffy toy mid-month: Twitter Web Analytics to help website owners gauge the impact of tweets. Twitter, which up until this month supported 12 languages, rolls out its service to five more, including Hindi, Tagalog, Malay and simplified and traditional Chinese.\nAugust 2011: Twitter adds an Activity stream to give users more insight on how their tweets are doing and what the accounts they're following are doing. \nJuly 2011: U.S. President Barack Obama holds the first Twitter Town Hall to answer users' questions about jobs and the economy. Reports pin Twitter's valuation at as much as $7 billion, up from $3.7 billion in December 2010.\nJune 2011: Twitter brings native multimedia sharing to users, which directly connected photos and videos to tweets. But Twitter didn't stop there, integrating several new social tools including Amazon, AOL Video, Foursquare, Plancast and Gowalla. By month's end, users were dispersing more than 200 million tweets per day. Twitter becomes the default social graph and network on iOS devices when Apple builds Twitter into iOS 5. Twitter for Journalists also rolls out. \n\n\n\n\nMay 2011: Twitter use ramps up on May 1 with speculation and subsequent confirmation of terrorist Osama bin Laden's death. At one point that night, Twitter records 5,106 tweets per second, which is the third-highest tweets-per-second tally, behind numbers registered during New Year's Eve 2011 in Japan and the destructive tsunami there in March. Twitter acquires TweetDeck after months of speculation. Twitter ends the month by unleashing the Follow button that people and brands could put on their websites.\n\n\n\n\nApril 2011: Twitter introduces a new version of its homepage with a sleeker design and revamped pitch to potential users; expands its Local Trends feature to 70 more cities and countries; and updates its search tool to make it easier to find new people to follow. Talks about Twitter's future intensify as CNN reported UberMedia \u2014 the company behind UberSocial, Echofon and Twidroyd \u2014 is \"outlining plans\" to develop a Twitter-like competitor.\nFebruary 2011: Egyptian President Hosni Mubarak steps down amid a groundbreaking digital revolution in which Twitter played a much-debated role. Users, among other methods, put hashtags #Jan25 and #Egypt in their tweets. Rumors swirl about whether Google or Facebook will buy Twitter for as much as $10 billion. \nMarch 2011: Twitter turns 5 and sees the return of Twitter inventor and co-founder Dorsey, who officially comes back to the company as executive chairman. Also, Sharespost values Twitter at $7.7 billion.  \nJanuary 2011: eMarketer predicts Twitter will triple its advertising revenue to $150 million in 2011. Twitter users in Japan set a new record for tweets per second \u2014 almost 7,000 \u2014 in the moments just after the country entered the year 2011. Twitter put together this cool map visualization that shows activity spreading west, from time zone to time zone, as each new region welcomes the new year. \n\n\n    \n\n\nOctober 2010: Twitter co-founder Williams steps down as CEO, handing the title over to COO Dick Costolo.\nSeptember 2010: Twitter begins rolling out the new Twitter.com web interface, adding new ways to embed multimedia into the stream (see video below). Twitter changes the default avatar picture to a drawing of an egg. \n\n\n\n\n\n\n\nAugust 2010: Twitter launches the \u201CTweet Button,\u201D an official option for web publishers to count retweets and let their readers easily share content (see video below). Twitter surpasses MySpace in number of unique monthly visitors. Between August 2009 and August 2010, Twitter grew 76% to 96 million unique visitors, while MySpace dropped 17% to 94 million.\n\n\n\n\n\n\nJuly 2010: Twitter search results begin showing people, too. Furthermore, Twitter starts offering personalized suggestions of users to follow with a feature called \"Suggestions for You.\" \nJune 2010: Twitter users set a new record for tweets per second \u2014 3,085 \u2014 during Game 7 of the NBA playoffs between the L.A. Lakers and the Boston Celtics. That record was short-lived though, as users broke it later in the month with 3,283 tweets per second at the end of the World Cup match between Japan and Denmark. Twitter rolls out new ads in trending topics section. \nApril 2010: Twitter\u2019s advertising platform, Promoted Tweets, goes live (see video below).\n\n\n\n\nMarch 2010: Twitter turns 4. \nFebruary 2010: Users start clocking in more than 50 million tweets per day. \nJanuary 2010: NASA astronaut T. J. Creamer sends the first unassisted tweet from space aboard the International Space Station.\n\nHello Twitterverse! We r now LIVE tweeting from the International Space Station \u2014 the 1st live tweet from Space! :) More soon, send your ?s\n\u2014 TJ Creamer (@Astro_TJ) January 22, 2010\n\nOctober 2009: Twitter passes the 5 billion tweet mark. \nSeptember 2009: Twitter changes default avatar to a picture of a bird.\nJuly 2009: Twitter earns spot in Collins English Dictionary as a noun and a verb. \nJune 2009: AP Stylebook adds Twitter terms, and concerns over Twitter's flatlining growth emerge.\nMarch 2009: Twitter turns 3 on the heels of a Nielsen Online report indicating Twitter grew 1,382% year-over-year.\nNovember 2008: Twitter passes 1 billion tweet mark. \nOctober 2008: Dorsey steps down as CEO to assume a less-intensive role as chairman of the board; co-founder Evan Williams replaces Dorsey. \nMarch 2008: Twitter turns 2.\nApril 2007: The Twitter service becomes its own company.\nJuly 2006: The microblogging service officially launches to the public on July 15. Later this month, co-founder Biz Stone explains what Twitter is in a hilarious video on YouTube.\n\n\n\n\nMarch 2006: Jack Dorsey creates Twitter. On March 21, he publishes the first tweet ever, which says, \u201Cjust setting up my twttr.\u201D\n\njust setting up my twttr\n\u2014 Jack Dorsey (@jack) March 21, 2006\n\n      window._msla=window.loadScriptAsync||function(src,id){if(document.getElementById(id))return;var js=document.createElement('script');js.id=id;js.src=src;document.getElementsByTagName('script')[0].parentNode.insertBefore(js,fjs);};\n_msla(\"//platform.twitter.com/widgets.js\",\"twitter_jssdk\");"^^<http://www.w3.org/2001/XMLSchema#string>
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