Lee Semel has build a great open calendar for the NYC tech community. We talked a lot about how there wasn't a central resource for this stuff and no good way to find NYC tech events.
We didn't like the calendars that required sign-ins or being a member, and so we went for something that was wiki-like in that anyone could just come and check it out.
It just got launched, so we'd love your feedback.
We'd also like your events!