Check this crap out. I just went to powertabs.net and they had this message on there.

[December 17th, 2005] Due to the recent actions of the MPA (see here), we had to change the available content temporarily. More information will be posted soon. Sorry for any inconveniences this change may cause. Thank you for your understanding and patience.
They linked it to this article.

http://news.bbc.co.uk/1/hi/entertainment/4508158.stm

Read that crap. What a load of bullshit man. Apparently, guitar tablatures online are illegal. Gay people want you to go and buy the official tab books. That's wonderful because I bet a good 70% of the stuff I listen to don't have any goddamn tab books. So people who waste their personal time to try to tab a song out for the good of the guitarist community are criminals. LOL! Learning a song according to a person's interpretation of it is a crime I guess. Now we don't only have to worry about having music content on our computers but also tabs. OH NOEZ! I HAVE POWERTAB I GO TO JAIL OMGZ PLZNO!

If you're gonna arrest people because they publish tablatures online, arrest the nubs on mysongbook.com seriously man half of those guitar pro tabs are incorrect...