Okay, it’s been around for a while, but it’s one of my favorite sites, and is a good example what happens when the content is interesting, and the community really knows how to promote, online and offline.

Yelp! is a social network-y review site (okay, it’s about adding friends and comments, but that’s how most social networking sites define it, whatever) that contains thousands of reviews, mostly of local businesses. Need a lousy hotel in Anchorage? It’s there! A great restaurant in Tempe to get drunk at? It’s there!

They have all kinds of nifty widgets to add to your blog.

One lament — how about opening up a Canadian site, yo. I have a bunch of restaurants to review up there.