I noticed in my activity that there was an event for following the user “kxjin”- but I never followed him. He seems to have an unusually large number of followers, too, 227.
It’s because he’s Facebook user #34 and for some reason Mongo is using “friend_user_ids__contains=34” to return every newsblur user who has a Facebook friend that contains the number 34 anywhere inside it, not just in its entirety. Ugh.
This will require a slight rewrite of friend matching, which I don’t have time to do now. I’ll go ahead and remove any traces of the user, but this will undoubtedly happen again someday, as another early Facebook user with a low user id joins NewsBlur.