Apart from providing a good showcase and catalogue publications, the PNBooks module can also handle affiliate/commission program links for books. It could even be cloned for other affiliate program products like software.
Has anyone out there in XOOPS land ported PNBooks to XOOPS 2? Is anyone with decent PHP programming skills interested in helping port PNBooks to Xoops. It is mods like this that will greatly improve XOOPS functionality and appeal to website developers.