Many web sites specialize on reviewing restaurants for a specific cuisine (e.g. burrito), feature (e.g. pet-friendly), or region (e.g. JatBar). These sites can sometimes be more helpful than general review sites because of their focus and experience. You might find tips and advice on these sites not found elsewhere.
Here are some examples:
The Sushi World Guide
Dog-Friendly Outdoor Restaurant Guide
Local Eateries Along Highways:
JatBar (SF/Bay Area)
You have a specialty restaurant review site that you would like to recommend? Let us know here or in our forums.
p.s.: check out the restaurant review search engines made with Rollyo.com on the right side under "Tools". You can use Rollyo.com to make your own restaurant review search engine for your city using local papers, weeklies, blogs, and web sites.