Introvertster
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.
It’s got some star endorsements too. I don’t know what it means that Sandy thought of me when he read this, but it gave me a good laugh this morning.