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:

• Jennifer Antkowiak @JenAntkowiak
• Meteorologist Dennis Bowman @amweatherguy
• Matthew Carlins (News Producer) @MattCarlins
• Dave Crawley @DaveCrawleyKDKA
• Jon Delano @JonDelano
• Kym Gable @KymGable
• Jim Lokay @JimLokay
• Trina Orlando @TrinaOrlando
• Bob Pompeani @KDPomp
• Ken Rice @kenricekdka
• Casey Shea (Web Producer/Shea-ved Ice Blogger) @CaseySheaPens
• Dr. Maria Simbra @DrMariaSimbra
• Angela Taylor (Web Producer) @angela_taylor
• Meteorologist Dave Trygar @Trygar
• Mike Vukovcan (Sports Producer) @mikevukkdka
• Chief Meteorologist Jeff Verszlya @verz
• Stephanie Watson @KDKAStephanie
• Mike Zappone @mzapkd
• Official KDKA Twitter Account @KDKA