This week’s spoiler award is a tie, going to assholes The New York Post and Howard Sterne, for yesterday spoiling the ending of Marvel’s Civil War 2 on the day it came out. Special mention goes to the Post for actually publishing the last page of the book in their story. Having read the issue now (and having been warned of the spoilers in time), I can say that the ending is a big change for the character(s) involved, and though it isn’t actually that much of a surprise given the build-up from other recent stories, it’s really bad form to publish a story about the ending of something on the day it comes out.
More info on Marvel Civl War.
Edit: additional spoilsports: Yahoo! via an AFP wire story. The rest of the media is starting to pick up the story, which is fine now that it’s after the issue’s opening day. (I should note that these links do, obviously, contain spoilers.)
Edit 2: See Where were you when Civil War #2 was spoiled for you? for a screenshot of Yahoo! doing some spoiling.