You can use Dropbox as Git server if you wan't.
(See http://stackoverflow.com/questions/1964347/mercurial-and-i-g... and http://stackoverflow.com/questions/1960799/using-gitdropbox-... )
Going out on a limb: I'd assume that if you care enough about your data to version it in a git repo, then I'd also assume that you'd not enjoy it exploding because of a sync problem between two computers.
In what implementation of the English language would that contraction make any sort of sense?