I'm always on the lookout for new sites related to Team System.
I received an email yesterday pointing me to TeamDevCentral.com. I responded back asking for a short blurb about the site, and here is what they said:
TeamDevCentral is North America's premiere online hosted VSTS/TFS Solution. It provides complete dev collaboration for distributed teams. Starting up is very quick and priced with pay-as-you-go service packages; presenting a practical and affordable alternative to sourcing one's own VSTS/TFS system. Backing this up is bank-level security, nightly backups, server and AD redundancy, and a dedicated team providing expert advice and solid customer support.
I'll admit I have not done a cost comparison between this site and the other TFS hosting site I am aware of, but competition in general is a good thing. If you are interested in using a hosted TFS server, go check them out and see what you think. If you end of using them, or any hosted site for that matter, let me know what your experiences are like and I'll post the results to Team System Rocks!.