Because a lot of people aren't serious, or they find after a week or so, that long distance friendships are not really want they want. I have had numerous people ask to be my friend and then I never hear from them, so I delete them. I have lucked out though and I am in contact daily with 4 lovely Eygptian ladies who I help with their English and who help me from time to time with my Arabic when I need it.

That's true man. I really don't know either. -.-

I have no idea. I have come cross a few nice people and chat with them.