I've got one relatively new Xenforo board and 5 older vBulletin 4 boards. The experience with Xenforo has me thinking that I'd really like to get those vBulletin boards over to Xenforo. Ideally, I'd like to merge those vBulletin boards into one Xenforo board, but I'd need to set up "walled gardens" in some respects. For example, one of my sites is for Sony camera users and another is for Fuji camera users. I would need to be able to offer the option to see new posts from the Sony subforums to some users and the option to see new posts from Fuji subforums to some other users. Is that possible?