We just released a tool allowing you to convert single RSS feeds into PDF files formatted for the Sony Reader and iRex iliad. We'll release more advanced features in the future, including the possibility to create PDFs from multiple RSS feeds, and some sort of widgets (Sudoku, weather forecast, crosswords, etc).
Right now, the RSS -> PDF conversion is in still beta and we'd like to test it extensively during the next few weeks. The conversion already supports TOC + images in feeds, and basic formattings such as bold/italic/simple tables. Just like with other features from Feedbooks, we offer PDF output templates for A4/Sony/iLiad. You can also customize the output the way you want.
We're looking for bugs and ways to improve this new core feature -- any feedback is welcome!
Link:
http://www.feedbooks.com/news