DMCA on embedded videos?

Is this for real? How can this be. So all those videos being embedded from YouTube, Dailymotin, MetaCafe etc. can get you in troubles? http://www.citmedialaw.org/blog/2007/sam-bayard/embedded-video-and-copyright-infringement

I'm trying to launch a funny video site, basically embedding videos from all the main sites...should I be concerned?

Read this: citmedialaw.org/blog/2007/sam-bayard/embedded-video-and-copyright-infringement
Generally, the courts have stated that the embed code is a link and does not create or store a copy on your server and is NOT a copyright violation
BUT... If the link you embed to your site is in itself a violation of a copyright, you may be required to take it down and also may be considered guilty of copyright violation too.
So in short, legal content... embed and its legal, not legal/copyright violated content... do not embed. (home made youtube video...OK, Youtube clip of a movie, not ok!)