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"Celebrity deaths dominated the news this week, and these tragic stories became the source of much social media chatter.  While many used these tools to pay tribute to lost stars, others started new rumors that made it hard to separate fact from fiction.  Iran, meanwhile, dominated the social media buzz early in the week.We served up some handy social media features, too, to help you become smarter and more efficient in your use of social media tools.  Have a great week!1. Michael Jackson Dies: Twitter Tributes Now 30% of Tweets - Michael Jackson, the King of Pop, passed away this week. Twitter users posted tributes en mass, surpassing 30% of messages on the site. 2. Michael Jackson\u2019s Death Spurs Ugly Fake Stories About the Demise of Other Celebs - Social media is an extremely efficient way to spread news, but this week it also showed its ability to add fuel to false rumors.  Following the death of Michael Jackson, rumors spread that Jeff Goldblum and Harrison Ford had also passed: neither story contained a single grain of truth, but both spread quickly, reports Adam Ostrow.3. Neda: YouTube Video Too Distressing to Ignore - While this week has been dominated by US celebrity deaths, this time last week we were discussing a loss in Iran: Neda, the girl who appeared in a YouTube video seen all around the globe.  The video shaped opinions on the situation there, and received significant press coverage.4.  Perez Hilton Assaulted by Will.i.am, Says Twitter - Twitter spreads rumors that Perez Hilton had been assaulted by Will.i.am, but what was social media-powered rumor and what was truth?  Adam Ostrow digs in.5. 19 Twitter Desktop Apps Compared - What's the best way to use Twitter on your desktop?  Jennifer Van Grove delves into the feature-packed world of Twitter desktop apps.6. How LIVESTRONG Uses Social Media for Good - How does one of the top cancer charities leverage social media for fundraising and awareness?  Josh Catone explains.7. Michael Jackson Tribute Song Exceeds 100000 Plays - File hosting company Box.net saw an unprecedented number of MP3 plays this week as Michael Jackson fans flocked to hear a tribute featuring Diddy and other notable artists.8.  Britney Spears Not Dead: Britney Twitter Account Hacked - An internet rumor tonight said that Britney Spears had passed away: she hadn't...her Twitter account had simply been compromised.9. Perez Hilton\u2019s Despicable Michael Jackson Coverage Creates Backlash - Gossip blogger Perez Hilton mocked Michael Jackson's hospital visit prior to the star's death.  Was this a blog post too far?10. iPhone 3G S Dropped in Swimming Pool: Real or Fake? [Video] - A fun story ended the week: a YouTube video showed an iPhone 3G S falling into a swimming pool and keep filming.  But was it real or a fake?Image courtesy of iStockphoto, AndrewJohnson"^^<http://www.w3.org/2001/XMLSchema#string>
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