First there was Friendster. Then came the various parodies thereof — such as Fiendster and Enemyster. My new personal favorite is Introvertster, which has wickedly hilarious text:

Introvertster is an online community that prevents stupid people and friends from harrassing you online. You can use Introvertster to:

Avoid invites to chat, filter out annoying invitations for Meetup, birthday parties, or after-hours get togethers.

Packet flood a friends Internet connection making it impossible for them to send you an instant message.

Help your friends get a clue that you really don’t like people or care for idle chit-chat.

Create your own barrier to protect yourself against interaction with people. It’s easy and fun!