Stuff moves too fast to advertise, that's the thing with the forum that's aggravating when I try to match up. Just put links on the front page and we'll remember to give people the link when they are looking to match up. Let Darwinism decide if this solves this issue in a useful way, and we'll ask for tweaks if something isn't working out.
I don't think this is hurting the community or making it exclusionary. In this thread the predominate posters use the thread to call for groups, end up grouping together most of the time, and then post stories about how much fun they had. I think it's great that there's a group of regulars, but from the outside looking in they look like the only game in town and it could be discouraging for new folks whose posts get buried with no reply. Hopefully the 100 thing alleviates this and helps other folks group up without being lost in the shuffle.
TLDR IMO the 100 thing should help keep new folks from getting left out of groups for activities.
I concur.
If the current set of groups filled up, we'll just find new ways to split groups up so there's always both:
1) room for people to join
2) critical mass for creating games to join