What's the best site for cheap flights?

A friend of mine is planning her honeymoon, and asked me if I knew of anywhere on the Web where she could find cheap flights. After I asked her if she could take me along to Hawaii (no), I put this article together: What's the Best Site for Cheap Flights?.

More ways to save some travel money

• How to Find Cheap Gas: With gas prices getting as high as they are, it's a good idea to do a bit of Web research first in order to find lower gas prices in your area.