So I'm thinking, some of the charm effects (especially the life ones that involve the audience) might take a while.  Especially if there's a slow poster or someone's not able to get online.  Perhaps have a "time limit" on how long a dare has to go on?  3 days, maybe?  Of course, if everyone's done posting for it, it can wrap up early, and if no one wants to end early it doesn't have to, but the victim of a dare can call it off after three days, or something like that.  Thoughts?