You know how when you taste something bad, you want someone else to try it -- even if you can't get the taste out of your mouth? Even a gang of raccoons digging through trash cans in the heart of suburbia will beg their buddies to sample the grossest bits. It's just what you do. Same goes for when you want to save 15 percent or more on car insurance -- you switch to GEICO. It's what you do.