Yep! On user profiles and universes. They haven't seen a ton of use, but I'm hopeful we'll figure out a good way to integrate them.

I've changed the "New Stuff" panel on the front page to show updated stuff instead, and improved the Site History page to filter out things that aren't normal public content. Blog comments still make the cut, but not private messages and stuff. I'll probably do something else with the "New Stuff" panel (now "Updates") once I figure out a non-volatile edit log.