I mentioned this new service the other day. Since then I've uploaded three of my four books onto their site. Now, a week later they've put all of them onto one page with direct links to their relevant Amazon pages.
They have also put links to my blog, twitter, and website all on the same page. I can't think of a better deal than that, especially as it's free.
It hasn't resulted in any purchases yet, although as we all know Amazon is somewhat recalcitrant about recording sales at certain certain times of the month.