Recently, nearly every day, some guy creates many unsourced pages. Some of the numbers he creates pages about actually exist (and are usually fixed to add sources, which the person doesn't add), while some are not defined anywhere and are deleted.
My feelings about him are mixed - on one hand he is creating pages for numbers that have red linke pointing to them for some time, on the others he doesn't seem to understnad the rules. And he doesn't seem to be going away - every time he gets blocked, he shows up under a new name a day or two later. I have tried to tell him how to add sources on at least two occasions a while ago, but both times he ignored me (or at least didn't respond on that talk page).
So, I think we need to do something about it, since it is kind of annoying, but I don't know how to stop it - I mean, it's not like he's blindly putting swear words everywhere (like the one time someone wrote "Best swear word ever" or something like that). Any ideas?