Yes, Yammer will replace social stuff with SharePoint Online. I still want to get the Communities to work the way they are supposed to work and right now they seem buggy / not useful.
Suppose we have a community "Marketing". And we have "Katie" and "Jordan" joined the community (and follow it).
Katie creates a new discussion entry "Test Entry". On Katies Newsfeed the entry appears "Katie posted "Test Entry" in "Marketing". That's great. Katy just received a notification that she posted herself. Hooray.
See this image for an example (Robin created a new discussion entry, she gets a newsfeed entry - nobody else does):
Jordan on the other hand doesn't see a thing in the Newsfeed. She doesn't see that there is activity in the Community, so why should she bother checking it for new discussion entries?
I have checked this behavior with Office 365 as well as On-Premise SharePoint.
Secondly: Communities don't have the Newsfeed enabled by default. Why would one only to have a discussion board? A "community" is more than just discussions. It's files, newsfeed and lively communication, not always discussions. Enabling the Newsfeed feature works though.
Please tell me that the Community --> Newsfeed integration is still buggy and this is not the desired outcome, that every community member sees his/her own posts in his/her own Newsfeed. (Yes, I could tag people in the posts "@Katie" and they will receive notifications - this is not the intent)