What you will find out is that is that Viacom did NOT ask that this specific video to be taken down. This is really Google goof..
And the Law suit is really about Google not even maken slightest attempt to clean up thier obvious copyright violations.. however had no problem keeping the Pr0n off etc..
As a real content producer, I loved the true idea of Youtube where "YOU" the user can post and share your own content. Not just copy and past others hard work..and then let the wonderfull "do no evil" Google make money from thier work.
No evil my. my ass..