Blubster Company

The companies behind Kazaa, Grokster and other file-sharing networks weren't named in the 261 copyright-infringement lawsuits filed this week by the major record labels, yet their livelihood depends on how the public responds. Like television networks, the companies whose software makes file sharing possible survive on advertising and other revenue tied to the size of their audience.

The companies behind Kazaa, Grokster and other file-sharing networks weren't named in the 261 copyright-infringement lawsuits filed this week by the major record labels, yet their livelihood depends on how the public responds. Like television networks, the companies whose software makes file sharing possible survive on advertising and other revenue tied to the size of their audience.