RE: Matchmaking service?
Until Raz has a chance to respond (he gets pretty busy), I believe the answer to both questions is yes, that's correct. The system doesn't exclude inactives or nonladder members. I looked over some of the discussions the site officers had when Raz first proposed the idea and that seems to be the case, but bear in mind it is a work in progress. Personally I'd include inactives (the game challenge might bring them back), but the nonladder members I'd exclude.
The last site upgrade he did has an "improvement to the matchmaking system to make it more intuitive" logged, but doesn't go into specifics.
Hope that helps a little.
Scud (CS Forum Moderator)
Resolve then, that on this very ground, with small flags waving and tinny blast on tiny trumpets, we shall meet the enemy, and not only may he be ours, he may be us. --Walt Kelly