Personal information and ads on Twitter
I don't understand why people use Twitter to begin with. It's what, 160 characters of text per tweet, right? But to load the webpage, it wants kilobytes or even MBs of data in scripts and media objects, and it doesn't even work with JavaScript or media disabled. To simply show a text message! There's no graceful failsafe mode to display a few bytes of text! This makes one conclude that Twitter is a data gathering and marketing business disguised as a messaging platform. Anything they do as a company should be very, very suspect.