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Well I'm not sure how they are going to do it, but I imagine that when you go the "new" tab or any other, whilst in a community, it would only show posts from that one.

So, if you're in an art and design community, you could look at the new page without having to see a bunch of random and, to be frank, stupid shit. With the implementation of the right kind of communities, and perhaps with the ability to create your own, this could be an excellent way to bring like-minded people together.

I just hope there will still be an easy way to go from community to community because I don't think its healthy always being around people who agree with you.

And yes, your idea at the end. If we could have a "new" feed that shows us only things from the communities we are a part of, or one of them at a time singularly.

Yeah, I like your ideas! I am worried though that if you're free to make your own community (or as many as you'd like), we'll simply have a shit load of communities centered around one and the same subject. Though I guess that should be how it works, because hey, who says I want to join a 'photography' community, when I'm only interested in 'landscape photography' and 'macro photography', while others might like 'nude photography'. I would also not like 'sports gaming', but I would love to join 'rpg gaming', etc.