RateMyProfessors.com (RMP) is a review site, founded in May 1999 by John Swapceinski, a software engineer from Menlo Park, California, which allows college and university students to assign ratings to professors and campuses of American, Canadian, and United Kingdom institutions. The site was originally launched as TeacherRatings.com and converted to RateMyProfessors in 2001. RateMyProfessors.com was acquired in 2005 by Patrick Nagle and William DeSantis. Nagle and DeSantis later resold RateMyProfessors.com in 2007 to Viacom's mtvU, MTV’s College channel.RateMyProfessors.com is the largest online destination for professor ratings. The site has 8,000+ schools and over 1,000,000 ratings, RateMyProfessors.com is the highest trafficked free site for researching and rating 1,700,000+ professors from colleges and universities across the United States, Canada, and the United Kingdom.[citation needed]