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Along with Napster, LimeWire was one of the most popular applications that people used to download mp3s illegally. At its peak, LimeWire had 4 million daily users. It used a similar Peer-to-Peer technology as Napster that allowed people to share files, mostly MP3s of popular songs. Thirteen major recording companies sued LimeWire LLC for fostering copyright infringement.
As the case progressed, the music studios argued that LimeWire was liable for every time a file was illegally downloaded through their system. Their estimate was that there had been 500 million illegal downloads, which would come out to a penalty of $75 trillion ($75.000.000.000.000!)
Ultimately the court decided that number was ridiculous and said that the company was liable only once per song, and the damages would amount somewhere between $7.5m to $1.5b. The parties eventually settled for $105 million.