The people behind BIABrewer.info have created a Google + page for BIAB brewing. The page was just put up (so there is not much content), but those of us currently there will be posting our BIAB brew days and sharing information. Add to your circles if you like:
https://plus.google.com/u/0/100299206333871949032/posts
https://plus.google.com/u/0/100299206333871949032/posts