What's the deal with Blurb!? UPDATE

This was my concern (taken from the competition guidelines):

By entering a Submission through the web entry form at www.photographybooknow.com, Contestant agrees that the Submission entered may be showcased in Blurb's online bookstore, making previews available to the public and making the book available for purchase, as subject to Sponsor's Terms of Use, to which Contestant agrees.

So I found a contact over at Blurb, this was their response:

So we’re using the books only to showcase the best and brightest for the events around Photography.Book.Now. There’s no reason why you can’t change back to private [meaning it won't be available for sale to the public] after the event is over, but we’ll be showcasing these in our bookstore, and if your intent is to not have them purchased, simply set your price ridiculously high.

They also mentioned that the artist does get 100% of any online sales, minus the artist's cost to print the book. So if you don't want to sell the book, price it $1000. And if it does sell, well, then you just made $950. Sounds good to me.