This site will send Game of Thrones spoilers to your foes
will send an anonymous text message to anyone you like with spoilers for each episode of Game of Thrones right after it airs. It's based on the US release so that means a nasty surprise early Monday morning, long before they get to see the show locally.
It's a pretty horrible thing to do for a fan, but there might be folks out there who dislike people enough to give it a go. The service is American but it works on international numbers. Here's the write up: