Audioscrobbler is a free service that is sends information regarding which songs are played to an independent server. The service signup is free and only requires that you pick a user name and password that is not already in use. Audioscrobbler is currently utilized in Amarok.

Uncheck "Submit tracks I play" to prevent querying Audioscrobbler for suggested tracks.

The Audioscrobbler Amarok group is located here: Amarok Audioscrobbler Group