HOW IT WORKS
This project, a conceptual artwork by artist Jeff Thompson, allows for 4,200 artists to have their work seen in Artforum magazine.
Each participant, paying $1.50 USD and sending their image electronically, will then have their piece, along with all the other participating artists, in an advertisement. Of course, due to the number of artists needed to raise the money for this venture, the images themselves will be quite small... about 3/16" x 3/16", or the size of the image below:

You make a secure payment of $1.50 using PayPal and send an image of your work. The image is shrunk to the 3/16". When $4,200 is raised, the ad is sent to Artforum to be published.
The final advertisement and all participating artists will be listed on a revised version of this site after publication.
NO ONE IS MAKING MONEY ON THIS PROJECT... WELL, EXCEPT ARTFORUM
The $1.50 you will be charged goes 100% to getting your image in Artforum.
The price of a full-page ad is $4,200. PayPal takes $0.30 on each transaction, plus a small percentage of the sale price and, depending on location, a currency conversion fee. Therefore, the total price of the image is $1.50.
IS THIS A JOKE?
No. Well, kind of. But it's totally for real, if that's what you're asking.