My friend Bailey brought some Las Vegas guide books when she flew in and we've used them a lot of the week. I had heard of and used Zagats a little before but nothing to this extent. (Examples: Best rated campy attractions helped me figure out which tourist stuff to skip and I'm using some recommendations for good solo dining restaurants)
Did you know you can get a free guide for doing a review? It can be as simple as giving an amount of stars to a cafe. Here's the page where you can do just that.
Getting something free and useful for giving my opinion? I'm down with that!