There are hundreds of Norwegian anti-CPS groups on Facebook. The largest (2-3 groups) has 5000-6000 members.

They had hardly been so big if there was nothing seriously wrong with child welfare. Since Norway a small country...

"Forumet Redd Våre Barn" is about the same.

Section for English speakers
http://forum.r-b-v.net/viewforum.php?f=56