It looks a bit like Facebook: a central column with your "feed" (which is populated with articles from a bunch of interests - "subwikis" - that you choose when

It looks a bit like Facebook: a central column with your "feed" (which is populated with articles from a bunch of interests - "subwikis" - that you choose when you get in for the first time), a left column with other groups you might be interested in joining, and a right column with invite links for your friends, a list of your current groups, and recent changes. There's a bar at the top with notifications and search.