And by “screw” I mean “forcibly reassign a subdomain,” which is basically disemboweling a blogger’s very soul because it changes his web address and renames him. Worse than the subdomain swap, however, is how childishly Tumblr handled it. With some choice missteps from Tumblr Director of Operations Meaghan O’Connell (pictured above via), the usually user-friendly microblog platform is facing user insurrection. Here’s how it went down: Pitchfork magazine decides it would like to own pitchfork.tumblr.com. Though the domain is already owned, it has not been active since November. Here’s Pitchfork’s explanation of what happened next…