What you saw was all the games that are be "broadcast" by Gamespy. When I say broadcast, I mean that anyone can host a multiplayer game, and then have the Gamespy service list it so that others can join.
What we have here is a list of scheduled games that members are going to play/host/dm. Look at the left hand column on the home page and you will see a link called "Schedule a game". Click that link and you will be able to set up a game to be played at a later time/date. This is to allow people to organize games in advance instead of just trying to throw one together at the last minute.
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I.P. Logged