Influential as one of the original social-networking sites:

“Find old classmates and co-workers. Provide an easy way for your friends to find your blog. Share photos with your friends. Never forget your friends’ birthdays or lose their contact information. Check your friend compatibility on any given day using joint horoscopes. See your relationship to any member on Friendster, allowing you to safely meet people through your friends.” (from Overview on Friendster site)

Starter Links: Friendster home page