We created a public group for Wikimaps on Facebook. The group is still small, but the aim is to gather people from different edges of the discussion, from glammers to mappers. It's less about Wikimaps and more about historical maps on the net.
Language is free, English understood better than others. It will be a mixture of local awareness and global discussion.
Please join!
It's at https://www.facebook.com/groups/wikimaps/
Susanna