I got an email earlier today letting me know that
BitBucket has been acquired by Atlassian. They are offering free code hosting (it's a distributed version control system - DVCS - based on Mercurial) that will allow you to create up to 5 user accounts.
They're also offering (until Oct. 3rd) a free tier upgrade to 10 user accounts for a year. I host my own code repository, but figured this might be a useful link for others since here's the features of this:
free hosting
unlimited private repositories
plus Atlassian's support.