Here are a couple articles that spell out some interesting and useful Dropbox tricks. The one about Mercurial is coolest – but probably only useful to a certain subset of readers.
Free utility Dropbox is great at syncing files between computers, but it has a lot more potential than just that. Here’s a handful of clever ways you can use Dropbox that you may not have thought of.
When you go to another machine, say a Windows machine, all you need to do to get access to your repository is to install Dropbox and then clone from it:
C:\code> hg clone “C:\Users\sgraham\My Dropbox\myproj-hg” myproj
And that’s it. hg push and hg pull && hg update will already work properly.