The internal message board of the One Brooklyn Bridge Park luxury condominium is generally used to post “babysitter wanted” notes or to remind residents to pick up their dry cleaning. Last spring, residents used it to air their dirty laundry.

When city officials said they were ready to solicit requests for proposals to develop two parcels of land north of Atlantic Avenue and directly south of the building, they altered a 2006 plan so that it would include affordable housing, for moderate- to middle-income residents. Some condo owners reacted with unfiltered fury.

The messages expressed outrage over how the two new buildings would increase crowds in the park and cramp the already oversubscribed local public school, P.S. 8. Other residents were angry that a 31-story tower would block their views. When some people intimated that affordable housing could bring down property values, the debate took a tone that was offensive to Nina Lorez Collins, a writer and former literary agent.

“It felt very Nimby, like ‘We don’t want poor people in the backyard,’ ” she said recently.

“After two months of those comments, I sent out an email to everyone. I said, ‘You are making me ashamed to be your neighbor, please stop.’ ”