Gridskipper
gridskipper.com
Its mission: to "scour" the web for juicy tidbits on urban travel, nightlife and culture, "with one eye on sophistication and the other on playful debauchery." Posts point out neighborhoods, restaurants and activities you probably won't read about in other guides, with a healthy mix of the practical and self-indulgent. A typical entry might cover a summer music festival or obscure art exhibit, or link to the World's 100 Sexiest Hotels.