"According to an Oct. 19 article by the Associated Press, Comcast has been actively degrading and
blocking BitTorrent traffic, amounting to "the most drastic example yet of data discrimination by a U.S.
Internet service provider." This is the latest and most clear cut incident illustrating the need for "network
neutrality" principles for the Internet. This factsheet provides a technological backgrounder on what
Comcast is blocking and how the company does it."