Well we opened registration for the November Mobile Monday London group and it filled up almost during a blink. It is interesting running an interest group where you get some active members that learn all about the tools and get stuck in and make the best of things. On the other hand you get people that dont pay attention (too busy no doubt) and we get loads of complaints from people that they receive too many messages from the group ... without checking how they set up their membership in the first place. Never mind, I guess this comes when the group of people expands rapidly.