[diiiimaaaa]

Probably you're right, I agree that such behavior might be confusing in some cases.

I don't think that it's possible to launch fullscreen YouTube video player in mobile Safari by just clicking on link.

Maybe we should just link directly to the video (not to video page), like so: http://www.youtube.com/embed/PZvi11Yy9r8

This should be tested on real users for a while to see which option is best.

[rs26]

That seems to work a little better for iOS. Platforms with an OS-level back button are fine with the video page IMO.