I had worked on a few development projects at Microsoft recently. Two projects are now published at the Microsoft Developer Network website -
Coding Groove Web Services Applications with the Groove 2007 SDK (Part 1 of 2)
Coding Groove Web Services Applications with CodePlex GWS Helpers (Part 2 of 2)
My thanks to Molly Yen at Microsoft (Beverly MA) for working with me in the above projects.
Ashok Hingorani (Microsoft MVP for Groove) has an interesting blog post about Microsoft Groove. Groove should not be a mystery any more.