While the Twitter machine is plowing full steam ahead and getting a ton of press, not many people know that the start up company is actually three years old. People didn’t hear about Twitter until July 2006 but today is the official birthday. Everybody from celebrities to politicians to soccer moms are on Twitter, and it has definitely gone viral. Check out the old logo pic below. Not bad looking but the R looks like an A. Also check out our Top 10 Celebrity Twitter Feeds! Follow GadgetReview!!