The NYT House & Home section was kind enough to let me scribble up a story about buildings in New York City with their own web message boards. The story is light on URLs, though, so here's a link list of the boards mentioned in the story. Also noteworthy is the previously mentioned MeetTheNeighbors.org, probably the fastest way to get a message board going yourself if you're not a programmer-type.
· High Rise, High Tech: Online Rant Control [NYTimes]
· Crest Connection [CrestTenants.com]
· Citylights Discussion Board [Queenswest.com]
· Long Island City Discussion Board [Queenswest.com]
· Co-Op Village Forum [lesonline.org]
· Cass Gilbert Residents [Yahoo! Groups]