I admit it, I know nothing about Groove. My cloning hammock broke last Summer so I’ve just not had the time. I do know it’s a collaboration solution that can integrate into the other Office 2007 system products, e.g. Sharepoint, Office, etc. The emphasis is on the user being able to work when they want to and being able to work with who they want to.
Microsoft has released a document that describes how they deployed Groove 2007 to 8,000 users across their global operation. Details of AD integration, Office and Sharepoint are also promised.