Mail art prank to be, via eBay

Here's a way of entertaining yourself in a dull locale: threaten to send postcards to people you don't know, auctioning off dibs on targets via eBay.

These postcards will be rant-ravingly insane, yet they will be peppered with unmistakable personal details about the addressee. Details you will provide me.
The postcards will not be coherently signed, leaving your mark confused, guessing wildly, crying out in anguish.

Chaotic fiction!

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