yes, email seach is a must. i dont understand how it was released without that function.

there are community efforts to solve that, maybe in a couple of months this situation will be remembered only on a nostalgic chat with friends. (like copy paste function in iphone). until then...

about youtube hd, i dont know i think that youtube is filtering the hd function because the button is missing in things like "district 9 hd", but ill try it and update this post

about an app, yes. there are two (to start with, and unofficial) that let us watch and download youtube video. ill try that too.