How to adjust youtube videos to start at a certain time

 Have you ever been in a situation where you want to send a youtube link to a friend and tell him to start watching at a certain time and not from the beginning?

Have you ever wondered whether or not there is a shortcut for such a trick?

Well, actually there is not just one but two !

At the end of the link, just add (#t=?m?s) without the braces and replace ? with the exact minute and second you want, e.g.

http://www.youtube.com/watch?v=uy0HNWto0UY#t=4m21s

or just use the form (#at=?) without the braces and replace ? with the exact number of seconds at which you want your friend to start watching
http://www.youtube.com/watch?v=uy0HNWto0UY#at=410

Enjoy :)