A fight over Guitar tabs

"Recently Hal Leonard Corporation, the world's largest songbook publisher, sent an email to the music publishing and copyright community urging them not to license guitar tablature for free, advertising-supported use online. The email includes a number of factual errors and was potentially very damaging to the potential for a free, legal, and licensed destination for guitar tab online. Musicnotes and MXTabs have posted the full letter along with their response."