I've tried out the rss feed with the forums and it's pretty good.
I've set it up in Outlook and also in Google Reader. You get the full entry, not just the first couple of lines (which you get with some rss feeds). That means you only need to go into the forum if you want to comment.
I can't see a way to get posts to email themselves to me, but the rss feed is good enough that I don't think that's necessary.