URLfilterDB has incorporated an additional URL category in their URL database: peer-to-peer (P2P).
Peer-to-peer sites and networks are used to share files, often anonymously. The shared files are mostly movies, adult material and even sometimes illegal material. Previously, peer-to-peer sites were part of the URL categories proxies, warez, entertainment, adult and audiovideo. All clients of URLfilterDB are notified by email and encouraged to use the new P2P category.