A couple of important questions regarding Chirp - AKA the first Official Twitter Developer Conference - have finally been answered. Would-be attendees now know which dates to be in San Francisco (April 14th and 15th) and how much money they'll have to spend ($469). These facts were posted on the official Chirp homepage today, and the first 100 tickets (out of a total of 800) were released, too. Interest seems to be high so far.