» Mon Nov 01, 2010 6:21 pm
Walkthroughs are perfectly legal. If you try selling the game, then that's illegal, but you're simply sharing your experience.
Youtube has a policy of removing videos that get a copyright regardless if it's a true copyright infringement or not. All you have to do is fill out an online form to release any videos with copyright strikes, and they'll remove the record from your account along with restoring the video.