Has the forced update hit yet?

I currently have 96 neighbours in the main town after a seep and clean, with about a dozen being new. In the last 24 hours less than 20 have visited me, but I have visited them all. Why post in the add me thread and then not visit. I am an infrequent visitor between events but make a point of daily for all during events. Guess its time to be less nice and see if I can cull the non helpers and find new. I really hate to dump long time friends but when its the same no visit every event they are not helping at all.