I use dropbox for a full autobackup and sync, with no thought beyond initial 30 sec configuration, across all 6 of the machines I use regularly. The advantage i

I use dropbox for a full autobackup and sync, with no thought beyond initial 30 sec configuration, across all 6 of the machines I use regularly. The advantage is that I don't have to think about it-at setup or at use time. I also find it indispensable as a coder, sure I use version control and save regularly, but I do make mistakes. Just recently I had worked an hour or so on a new class for a recent iPhone app, saving and committing merrily along the way, when I made a mistake and deleted the .m/.h files. Turns out I missed adding it to the repo. I fired up dropbox and got the backup within seconds. Other times I've used it to revert back to previous versions of documents not traditionally kept under version control. I haven't used Google Apps in the same sense, although I do use Google Docs for collaborative realtime editing and easy form creation.