Just read about this on Betanews today:
In short, it appears to be a system you embed in your application that collects technical and usage info for product research and testing purposes. It sounds a lot like the annoying things that some software apps (and Windows itself) do from time to time, e.g. "Report this bug to Microsoft", but for the average software user maybe that's more comforting that annoying (as it is to me).
I don't think I'd be inclined to include this in any software I had a hand in, but I thought it might be worth some discussion and consideration here at least. Does this data seem useful to you as a developer? If so, is the use of such a system an appropriate way to get it? Would you feel comfortable including this in your software?