Have you heard of DNAinfo? I hadn't until recently, when a number of news sources cited it in relation to the "Madame Gristina" hooker scandal as well as some other intriguing stories about town.
Technically this site is a "Manhattan Local News" one, so it's obviously specialized. But hey, if it's happening in Manhattan, eventually the rest of the city will hear about it, so it's a good site to know about. I've link to it over yonder -- in case you're interested in checkin' it out.