I, being a deeply petty person, actually have a little .txt file where I keep notes on why I blocked people, and that's also where I keep my list of people I'm going to unfollow on Tumblr a couple weeks in the future so they can't make annoying vagueblogging posts about how [x] number of people unfollowed them for whatever shitty opinion they just posted. Probably you should not be like me.