The Raven on Scribd

Scribd has launched an upgrade, dubbed iPaper, to its document viewer.

iPaper converts PDF documents to embeddable Flash and gives the viewer three different ways to view them.

The document can be viewed in one scrollable window, like a book with page-turning effects, or as a slideshow.

Scribd makes money by enabling users to put AdSense ads in each document. Revenue is split three ways (presumably between Google, Scribd and the document uploader). The document uploader takes the biggest share.

Late last year, Adobe and Yahoo partnered to bring ad-supported PDFs to market.