Levi Johnston is trash because....

It's all explained here:

So Levi can try to make a career out of spreading lies about the grandmother of his child if he likes. There’s very little anyone can do to stop him since it’s a he-said/she-said situation. Some people will even believe him. Malevolent sociopaths like Johnston often manage to fool people — at least for a little while. So let him mouth off about his huge secret on CBS. He’s probably talking with his agent right now trying to figure out what it is and the biggest media outlet he can get to cover it. That’s what snakes like Johnston do when they get a chance.

The people who really deserve to be ashamed are the people who know better. Those are the people in the media who figure Johnston is a liar, don’t have any more respect for him than they do for something they scraped off their shoe, and yet still give him an outlet to peddle his fabrications because they hate Sarah Palin. Levi Johnston may be trash, but it’s the people who are spreading that garbage everywhere as if it’s credible who should retch every time they look at their own faces in the mirror.