The problem with subscribing to communities at this point is the lack of content. I subscribed to a few different baseball communities, but none of them have anything other than maybe a welcome post or a few gameday posts without any comments. Communities are duplicated on a bunch of different instances too, which makes things a million times harder than it needs to be. I have no idea if one of the half dozen baseball communities I'm in now will make it big, if a new one entirely will make it big, or if they're all doomed to never have content.