Among the Literati XVI
Four independent literary journals that have also stepped into the realm of book publishing -- Fence, McSweeney's, Open City, and Verse -- have joined forces to create the BigSmallPressMall. The BigSmallPressMall is a collaborative effort that will co-promote each imprint's titles, as well as readings and other related events.

You can even order a sample pack that includes an item from each participating press. That page includes the funny sentence, "Please note that since the the four publishers are in different locations, each book from the package will be delivered separately." Heh.

What a fine, fine idea. Any and all independent record labels and publishers could learn from this project.