A: It's a highly experimental, marginally functional, and totally unnecessary link-based social network. Don't ask why.
A: You can join by clicking on the 'Join' button on the 'Join Now' subpage (/subpages/join_now).
A: The point is to have a pointless, link-filled experience. That's the point. Don't overthink it.
A: Friends? Ha! You can make acquaintances with 37 other people who share your love for clicking on links. That's friendship, right?
Read the Anchor Link 2 Blog for more information on the futility of it all.
A: Free? Ha! You'll be paying with your sanity and your precious time. That's the price of admission.