Finally got around to downloading Groove this weekend. I don't know much more about it than I did before. But I didn't dig into it too thoroughly. My assessment, so far, is pretty much the common one: potentially cool. Potentially being the key word. As much hype as it's gotten, it has a steep road ahead. It's rather obviously missing the elusive "killer app" to get enough people to download it for it to be ubiquitous enough to get people to write apps to get people to download it -- and, even more importantly, use it.