Dear Sir/Madam,
Over the years, I have bought several books of tablature with your logo printed on them.
Today I notice that you are harrassing online guitar tablature sites. I don't believe that tablature posted to these sites should be covered by copyright, just as I believe that if I work out how to play a song and teach it to my friend, I should not have to consider whether I am breaking any laws.
Your actions as mentioned above are, in my opinion, incredibly short sighted and mean spirited. I hope you will take a look at what you are doing and reconsider.
Rik