And more concretely, Google's filter won't erase the alleged copyright infringement that's already occurred on the site for more than a year.

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After Mr. Erickson alleged copyright infringement, YouTube took Mr. Blake's video down.

WSJ: We Can All Have a Slice of Pi | Postmodern Times by Eric Felten

His pi song was taken off YouTube because of alleged copyright infringement.

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The US wants to take charge of the men from New Zealand to put them on trial for alleged copyright infringement, money laundering, racketeering and other offences.

BBC: US ordered to release Megaupload evidence to defence

Last April, Googler-in-Chief Eric Schmidt assured an audience at the Web 2.0 Expo that the issue fueling Viacom's massive lawsuit against his company--alleged copyright infringement on YouTube--would become "moot" as soon as Google rolled out a new tool for managing content.

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Among the other changes Friday, Mr. Silbermann said Pinterest will have "simpler tools" to report alleged copyright or trademark infringement.

WSJ: In Shift, Pinterest Says to Pin Your Own Stuff

"Over the course of the next several days... our content partners will begin sending notices of alleged peer-to-peer copyright infringement to ISPs, and the ISPs will begin forwarding those notices in the form of copyright alerts to consumers, " announced the CCI's executive director Jill Lesser.

BBC: US internet 'six strikes' anti-piracy campaign begins