Howdy all.
Last fall, I was looking for a way to get started GMing a game with my first running crew, who lives about 600 miles away from me. While there were a ton of tools out there, I had trouble finding a common-sense synthesis of all the ways different online tools can work together.
So I put this summary together on my Tumblr. It covers quick summaries of how I use Google Earth, Autodesk Homestyler, MapTools, and TokenTool to run my game.
GM Workshop: Free Internet Tool Summary
As a side note, my game's been alive and kicking since October 2012. If you count attendance as a measure of success, it's really worked out.
If you count player survivability... not so much.
Cheers!