Hi, regarding Xoops and GPL and commercial modules I have a suggestion that we may use the same princip as JED
(Joomla Extension Directory)

Quote from the wiki regarding modules/extensions-

"The Joomla team is strongly committed to supporting both commercial and non-commercial Joomla developers.
We have implemented some policy changes to enhance our support for developers. We think that the best
place to get an extension is from the original developer of that extension. Therefore we will not link
to collections of GPL extensions that are not submitted by the original developer. These are not
requirements of the GPL license but rather fall in line with our "forking" guidelines that no direct
copies or minor-changed copies of JED-listed projects will be listed. We support the original project
developer whenever possible to maintain the integrity of the listings and support developers who are
building and innovating on the Joomla platform.

To have a forked project listed in the JED it must meet our requirements:

•Significant change
Forked project must represent a significant code improvement, either in features or security and structure.

•Intent to develop and support
Forked project must exhibit an intent to develop and support the new product.

•Unique name
We do not allow forked projects by new developers to build on the name of the original developer without permission.

•Unique version structure
Version numbering must clearly indicate a new project.

This way there wouldnt be 10 different versions of everything, and rules to maintaine the integrety of the module development and not beeing "copycat" with the same modulename.

I think this should apply both to the paid and non paid section of module rep.