Add a way to search through posts.
This would be great to find resources people share like links, articles or particularly awesome comments or ideas, or challenges. Or specific people's posts. It's difficult to scroll through, especially in an active game, especially in an active DB10, to find a specific post you remember liking or wanting to remember.
I want to take it a step further. It's hard to see posts by the game moderator. It'd be nice to add them to the DietBet filter so players can easily see updates.
Re your query re filters versus searches ... Well, yes indeed, I love the new filters; they're great and help a lot. But yes, I agree with Katherine Bates that being able to search for particular people's posts, or topics and keywords one remembers having seen, would be awesome. Certainly in the "nice to have" category rather than an absolute prerequisite, but very nice. :)
I would also love to be able to filter out the automatic updates and get right to the actual comments!