How do Social Networking Sites work?

First, let me point out the obvious.  Half the world is below average in any given field.  Social Networking sites cater to the low end of the gene pool.  Dating sites cater to those of below average looks (read ugly).  MySpace caters to those with deficient self esteem (read "I need to have lots of people click on my web site and say they are my friends").  YouTube is dual function, for those with no life, and those with no understanding of basic cinematography.  Classmates.com is for people who "lost it all" after high school graduation and realized they are loosers in the real world.  Woot is for bad shoppers who can only make one decision a day (that is why "wootoffs" always are "the worst ever").  Live Journal and Blogspot are for those who are inflated in their perception of self worth (read comments zero). 

Man, that last one really hit home.  I need to go now.  Just remember, you can be a looser in more ways than one.