If your like me one of the few features that I've been jealous of on the iphone and droids ( booo) is integrated youtube. When they receive a youtube link via text or email it opens up their youtube player. Not the web browsers.
It took a while for me to get it working right but now we have it too!!!!
Check out my post
http://forum.ppcgeeks.com/showthread.php?t=125307