Socializing in the MySpace-age

I like Tribe.net and MySpace.com. I can't help it. Socializing is not one of my strong points, but I do find both of these sites fun. But, what I don't understand is, why do people get so hung up on who they add as friends on these things? I look at certain profiles, where the author says that they ONLY want friends that they actually physically know in the flesh or whatever. Some people are even adamant about it. For me, this is yet another example of "clique-ness," which is definitely becoming overrated as far as I am concerned. In my opinion, these sites are fun - fun for the purpose of entertainment and amusement, something not to take too seriously. Besides, didn't we already graduate from high school (many of us YEARS ago.) Come on, folks. Meeting people, in itself, is difficult already. This should not translate to all forms of social gathering and social settings. People need to lighten up a little bit. If you don't want to add someone, don't add them. It's simple. It really is. Now, I can understand if you have someone who does not take the first hint of rejection and continuously requests to be added to the point of going into stalker-mode. Then, I can understand. In the end, can't we all just get along? I don't think that it's too much to ask. Seriously, it isn't. Anyway, that's my take. Have fun, folks - don't take it so seriously.