Mel, about gmaps-pedometer - I did a google search for it and honestly didn't like it! I find mapmyrun a lot more user friendly. But yes, they both use google maps.
Glad you all like it. Unless you're an elite athlete, who cares if it's a tad under or over the real distance? Just out of curiosity though, how much are personal GPS devices? Like Garmin (I read something about it on coolrunning forum)? Do you wear them on your wrist like a HR monitor or in your shoe or what??