1) A "watch this blog" feature.
2) Somewhere on my home page that lists new posts to forums I'm not watching. Same thing for new blog posts (voluntary only by blog owner of course).
3) Can you make some kind of "bookmark" feature so I can keep track of posts I might want to refer to another day maybe? Like, if somebody posts a recipe or something...
4) Trade tracker of some kind...
I'm still thinking, but that's a good start