Over on AKMA's blog last week, I posted a comment about how comments were more than just "graffiti"--how they resulted in a conversation with the walls, in a way, since comments can cause the decor itself to change when you're dealing with "the living web."
A wonderful example of exactly that is at grumpygirl's site today, where she's got a new comic strip featuring a brand new character. Read down to the bottom to see the connection.