Support for Windows 7!
Yes, actually, I AM asking for support for an as-yet unreleased operating system, because I figure it'll solve an issue I had in Vista as well.
The thing is, in Windows 7, the GOG.com-added entried in Games Explorer are not usable at all, can't double-click them to run the games, can't right-click them to do anything with them, they don't get the fancy-pants icons they should get, and they get categorised as "Unspecified" instead of "Games". Some of the games for sale here get picked up by Windows individually, and as such get duplicate, usable entries.
In Vista, the problem is less obvious, and less critical, but I guess something in the registration process isn't going as it should (which I think is the reason for what I see in W7 as well) - normally you can right-click a game and chose "hide this game", on the GOG-added entries this choice isn't there (ok, so I can hide the duplicate entries that get added when Windows manages to discover the game itself, but I figure if the games were added properly that wouldn't happen to begin with).
See attached file to see how it looks... interestingly, World of Warcraft, popular and recent as it is, does not get picked up by Games Explorer in W7, yet (it did in Vista).