PsychoPsychonaut
Bluelighter
Is it possible to get into any legal issue if you uploaded a video of you taking massive bong tokes on YouTube, if you live in America?
Wanted one for Myspace
Wanted one for Myspace

No, but if you put it on your myspace page you can say goodbye to any job opportunities above construction or fast food. Like an above poster said, you have to realize that even after you take it down, it'll still be on the web in some form. If you get a successful career, you don't want that shit surfacing and coming back to haunt you 10 years from now. There's just no point, I advise you to not do it (yes, I realize you're going to do it anyway).