I recently sought out any companies that were providing hosted TFS projects. Microsoft is doing this with CodePlex.com, but only for open source projects.
Amazingly there is nothing out there for people who want to pay to have their project hosted in a TFS environment.
Some sites suggest that this may be offered soon: http://www.staheli.org/vsteamsystem/
But as of now, nothing…
Which is too bad, because I think the source code control of TFS is pretty nice, and I would like to use it in the future on some of my projects.