Google, when they haven’t got their eye on the prized .music domain, are setting their crosshairs on sites that rip YouTube videos into mp3s.

A crop of sites exist that enable users to type in a YouTube link and receive a quick download of the clip’s audio. According to Billboard, websites such as Music-clips.net and YouTube-Mp3.org (domain names which don’t exactly bellow “quality” at you) have now been sent letters by Google suggesting that their activities break YouTube’s terms of service. Google have owned YouTube since 2006, when they acquired the site for $1.65bn.

Google has been discriminate in its actions, ostensibly honing in on the biggest offenders. In the case of YouTube-Mp3.org, the site has been given seven days to shut down or face legal action. The site’s owner  “Philip” – or, at least, someone claiming to fill that position – has released a statement suggesting that “”there are roughly 200 million people across the world that make use of services like ours and Google doesn’t just ignore all those people they are about to criminalize them. With the way they are interpreting and created their TOS everyone of those 200 million users is threatened to be sued by Google.”