Want to Be on Mtv

I was looking for something to blog about and i came across the Mtv casting call page.
So, if u want to be on like true life or made or something you should probably go check that out. If you are 16 and pregnant they are also having casting calls.
It would be kind of interesting to know someone on these shows.
What I want to know is: where do you go to get on these reality shows where you get to date b-list celebs? Of course those type of shows aren't real, I mean has there ever been a happy ending? and for the average Joes, how do they even get shows? I may never know.
Oh! I forgo to add: Real World is Casting too! If you're between 18 and 24 you might want to check that out :).