I wrote simple instructions for myself on how to share Sublimetext 2 settings between multiple Windows computers with Dropbox:

http://juhap.iki.fi/misc/using-dropbox-to-sync-sublime-text-settings-across-windows-computers/

It is pretty easy to adapt these to for example Linux. Just change the paths to something more appropriate and use the “ln -s” command to create the links instead of mklink.