The Boston Startup Meetup started after the first Startup School (at Harvard in 2005). We have casual dinner meetings, so you can hang out with other techie startup folks, ask questions, and get feedback from people who know what they're talking about.
Join the email list for event announcements and local startup discussion: http://finance.groups.yahoo.com/group/boston-startup-meetup/
RSVP for the April meeting: http://www.mypunchbowl.com/parties/240386-boston-startup-meetup
After a hiatus of a few months, we're picking up again at a new location. Contact shimon at rura dot org if you have any questions.