We included a link to http://www.pdfreaders.org in http://www.gnupdf.org
Very good. We will check how to best integrate GNUpdf on pdfreaders.
We are not providing a PDF reader/writer application yet, but of course we are in need of help for the development. So, while the purpose of pdfreaders.org seems to be to promote the use of existing PDF reader applications, a link to http://www.gnupdf.org/Dev:Newcomers would be quite useful for us.