I've already expressed my love for the somewhat minimal yet brilliant viral marketing Overture Films has been doing for Matt Reeves' Let Me In, the Let the Right One In remake / re-adaptation, but things keep getting better and better. There is a viral site for the movie located at helpme.net that up until today has only had morse code on it. That site was originally used to unlock an invite to the secret Let Me In party at Comic-Con and to build viral buzz. But the site has changed today (via B-D) to feature four riddles related to the movie that you must solve to unlock a trove of creepy new photos. It's a fun mini-game, so check it out!