I remember how most of my friend were on ICQ and suddenly they all moved to MSN, I never understood why! ICQ had more feature + offline message. Very few at the

I remember how most of my friend were on ICQ and suddenly they all moved to MSN, I never understood why! ICQ had more feature + offline message. Very few at the time used Yahoo's messenger program, even when it also had more feature! Now most of my friends use facebook, I don't use it as much, but thats mainly because it's blocked by work. Hi5 and myspace never really made that big, at least here in egypt. Hi5 was perceived as something nasty or dirty. Facebook had respect Anyway, my moral is, it's really non trivial to understand what makes a site popular, and what make people switch. To replace facebook one have to come with something that is very very very attractive