I checked out their Korean Independence Day event back in August, which was very well organized and a lot of fun. They seem to have a solid foundation with both Koreans and foreigners, and not just Westerners either. It's good to see more involved participation from people of a lot of the other nations that Koreans seem to overlook. However, I was a bit put off by their political stances, which wouldn't have been a problem if they were so blatant about it. At the event there was a strained play that dramatized the unification of the North and South as all rosey and spectacular. The way they so transparently pandered to emotions kind of bothered me. From what I gathered, they tout themselves as being foreigner friendly but almost to a condescending level. Just first impressions though, and I think that they're doing good overall.
http://forums.eslcafe.com/korea/viewtopic.php?p=2775475More info on Mannam here.
How do the Mannamites find foreigners? Do they just do it by posting on this site and elsewhere? Or do the prowl the streets hunting foreigners?