From the announcement:
PaperC, the online platform for freely accessible specialist books, has launched its English user interface. International customers can now use the platform, offering academic, reference and technical texts for reading at no cost. The German web startup gives access to numerous books by renowned publishers such as O’Reilly Media, Walter de Gruyter, and many more.
Beyond free reading, PaperC’s digital library enables users to work with their texts on- and offline. For a per-page-fee, users can save and print pages as a PDF, copy text with or without citation, highlight and annotate text selections and manage their research and books in a dedicated online library. These premium functions make PaperC an excellent research and library tool.
According to thier about pages, PaperC launched in August 2009 and now have nearly 4k titles from 30 publishers. This is the first I've heard of it. Has anyone tried it?