Happy birthday Twitter!

Five years ago today, the micro-blogging site launched with its very first “tweet.”

Co-Founder Jack Dorsey said simply, “just setting up my twttr.”

Those words were the start of a social networking phenomenon.

Twitter now boasts more than 200 million users who send out 140 million tweets a day.

Many of KDKA-TV’s own employees both on the air and behind the scenes are on Twitter. Here’s the complete list:

Watch & Listen LIVE