Another week, another Hollywood lawsuit against a web sharing site. This time it's Warner Music and imeem.

Imeem has attracted a lot of visitors for its user-content sharing service. It claims a user base of 16 million people. The success has attracted the notice of entertainment companies and Warner Music in particular.

The company says that it both warns users against using copyrighted content and promptly takes it down when notified.

Warner says that unauthorized music and video are rampant on the site and calls Imeem "no innocent infringer." In its claim Warner writes that Imeem encourages "millions of users to flock to its website to copy, adapt, distribute and perform unlicensed sound recordings and music videos."