I haven't noticed, but CollegeHumor is doing it.

Since collegehumor is one of the supported ones for url transmogrification, just paste the URL instead of the embed code, then hit "validate".
>> ^ant:

I haven't noticed, but CollegeHumor is doing it.

So here's the embed I get when I click the "embed" button within the video player itself:

<iframe src="http://media.mtvnservices.com/embed/mgid:cms:video:thedailyshow.com:408200" width="512" height="288" frameborder="0"></iframe>

Videosift rejects that.

But, if I click the "share" button on the page on the Daily Show's website I get this:

<embed style='display:block' src='http://media.mtvnservices.com/mgid:cms:item:comedycentral.com:408200' width='512' height='288' type='application/x-shockwave-flash' wmode='window' allowFullscreen='true' flashvars='autoPlay=false' allowscriptaccess='always' allownetworking='all' bgcolor='#000000'>

Which Videosift accepts.

@dag, @lucky760, I hope you're thinking about generic iframe support in Videosift 5.0...