Friendster My No.1 :)
One thing that irks me is the constant e-mail invitations from my friends asking me to join Bebo, Facebook, MySpace, Friendster etc, how on earth can a person deal with SO many social networking sites?
For me, my choices are only: Friendster, Multiply & Hi5 (of which H5 is hardly even utilised making me feel like deleting it my Hi5 account.)
Friendster by itself is simple: add/invite friends, click on their profiles to see whats new, write testimonials for them, post bulletins and if you are visitor-conscious, keep track of the number of visitors to your profile. (as for the new Add Applications feature, i feel thats COMPLETELY REDUNDANT.)
Facebook on the otherhand, has a ridiculously high requirement of maintenance (logging in constantly to do online activities with friends) which i feel is just a waste of time and energy.
So handsdown, Friendster wins the day and will always be my No.1 choice. :)