NewYorkCountryLawyer writes "Ohio University, in Athens, Ohio, has found the key to getting the RIAA to stop inundating it and its students with "settlement" letters. According to the university's student online publication, the university paid $60,000, plus $16,000 per year "maintenance", to Audible Magic, the business partner of the RIAA's all-purpose expert witness Dr. Doug Jacobson, for its "CopySense" filtering software. Once it made the payments, the letters stopped. This of course raises a lot of questions as to the 'disinterestedness' of Dr. Jacobson, whose deposition in the UMG v. Lindor case was the subject of interesting Slashdot commentary."
His e-mail address is email@example.com, maybe you could ask him why directly? (pulled from a PDF listed above)