[sarnowski]

You may want to have a look at the git mailing list. Instead of using something like githubs pull requests, all changes are exchanged through the mailinglist. As a result, you have really expressive commit messages. I am a big fan of that development model as you can read the whole discussion about a single line change within the commit message.

http://news.gmane.org/gmane.comp.version-control.git

edit: with "git send-email master..origin" all your commits will be send as seperated emails to someone you choose. Afterwards, the receiver can easily get the commits from his mbox via "git am".