I've been browsing LessWrong less often as of late, and I believe that one of the reasons is because I don't want to get all excited all over a new insightful LW post, only to discover that it's a meetup in a city that I'm not even in.
And for newbies to the site in particular, they're not going to see all the awesomeness of this site if they simply look at the frontpage and think it's a community just for meetups.
I'm sure meetup discussions can go somewhere prominent. Maybe a separate section can be devoted to them.
This looks good to me. If people could agree to post meetups in a very specific format, I could make a scraper to extract the times, dates, locations, (and whatever else) directly from the discussion posts, and produce text like what you show directly for the front page, say displaying meetups in the next month. We'd still need someone to edit the front page template to include said text though.