We’re hearing that Amazon has invested $1 million or so in Seattle based Shelfari, beating out at least one venture firm that competed for the deal.

Shelfari is a website where users input all of the books they own, and have an online visual representation of their library to share with others. Users can share their library through the Shelfari website or via a widget, and make money by linking to the books for sale at Amazon. They launched well after competitor LibraryThing, which was itself partially acquired last year by ABEbooks.

The company won’t comment on the financing, so this isn’t officially confirmed. We expect an announcement shortly, however.