The betting thread ( if you mean the one in my sig ) sees intermittent action, a post here and there after the rush of posts the first few days.
I'm keeping a close eye on it to "bookmark" events in it when real credibly sourced info becomes available. So that thread at least will be active till Blizzcon.
It's been a source of fun for me allready but I will have even more reading how people will react on bets made in it and such.