October 14th, 2010
I have developed extensively on the Twitter API, most notably creating TwitBlock in 2009, which received coverage on Mashable and even got me photographed in Wired UK magazine. I am a regular attendee (and occasional speaker) at the London Developer Nest event where we have direct contact with the Twitter API development team in the US.
Sometimes I make simple Twitter apps for fun, and post them on apps.timwhitlock.info.
You can even follow me on Twitter, if you like.