This is a SC post!
I'm no more of a fan of spam, electronic or physical, than anyone else, but it does occur to me that, if I'm going to get spam (and I am; that's kind of the nature of the world today), it might as well be spam on topics that I find interesting instead of crud like the "buy this stock and make a million dollars" stuff that keeps arriving for the former resident of my address. So, much as many people are inclined to dislike any company that sells a mailing list, I confess I at least like the ones that go to the trouble of sorting their list according to what the people on it are into--makes sorting out the mail entertaining, if not much more lucrative for the mailers. And who knows--if they do a really good job, I might even buy something.