My apologies if this has already been suggested, but I couldn't think of a fitting search query. I browse the Find A Group listings often, and one thing I find frustrating is that there isn't an at-a-glance way to tell how many sessions of the listed campaign have already been played. One can always ask the person who created the campaign, of course, but that's a boring start to the conversation. I've also seen a few campaign descriptions which are regularly updated as the group plays sessions, but the GM's already got to do so much bookkeeping that it seems asinine to force another fiddly task upon them. Knowing how many sessions have been played in a given campaign is helpful for all sorts of reasons. If a player's joining a campaign at Session 100, for example, they can safely assume that the extant players have built up a rapport. If the game being played is one where the players and the GM define the nature of the setting at the table during the first session, like Dungeon World or Burning Wheel, it's nice for prospective players to know if they're getting in on the ground floor. I could list other examples, but you see my point. As far as implementation is concerned, I don't think this needs to be anything fancy. Just the words "Sessions Played" next to a text entry field that only accepts numbers and defaults to 0 will do.
