Late last month I was thinking about Dunbar’s number because I’m reading The Human Swarm by Mark W. Moffett, and since I think a lot about social media I decided that someone should start a new social site where you can only follow 150 people. (Ideally it would located at dun.bar, which appears to be a costly “premium” domain.) You’d also be able to browse a feed of the people followed by the people you follow, but if you wanted to actually, directly follow someone and you were already at the 150-user cap, you’d have to drop someone first. (As it is, on Twitter my follows are barely above 170.) I legitimately can’t tell if I’m serious, half-serious, or joking.