Google informs that "YouTube won the case against Viacom" — "the court granted our motion for summary judgment in Viacom's lawsuit with YouTube — and has decided that "YouTube is protected by the safe harbor of Digital Millennium Copyright Act (DMCA) against claims of copyright infringement." The decision follows established judicial consensus that online services like YouTube are protected when they work cooperatively with copyright holders to help them manage their rights online," said Google.
In 2007, Viacom sued YouTube for $1 billion because the video site hosted copyright infringing videos that included content from Viacom. "YouTube's strategy has been to avoid taking proactive steps to curtail the infringement on its site. Their business model, which's based on building traffic and selling advertising off of unlicensed content, is clearly illegal and is in obvious conflict with copyright laws. Viacom said that YouTube's employees were aware that the site hosted copyright infringing videos, but the court didn't think that it was enough."