About the part on reselling or giving away Pro not being allowed, but developers adding Pro to client's websites being OK, it's contradicting. The developer is selling his service to the the client, and Pro could either be considered sold or given for free to him.
Sorry, perhaps I was not clear enough in that reply, but there is a substantial difference. Installing a copy of s2Member that you acquired, on behalf of a client, is entirely different than bundling s2Member itself and redistributing it, for sale or otherwise. Software licenses, almost all of them, have very different rules for bundling together software packages and distributing them, particularly when you are offering them for sale. For instance, if one of our Customers bundles s2Member with their product, which depends upon s2Member, their product must now remain GPL compatible overall.
See:
http://www.gnu.org/licenses/gpl-faq.htmlGenerally speaking, it's NOT a good idea to bundle s2Member into any other software application that you write, as it may limit your ability to license your own software package ( overall ) in the way you prefer, particularly when you are planning to license it for resale. However, if your application is going to remain GPL compatible, and you can legally combine your GPL compatible software product with the 100% GPL version of s2Member
( i.e. the free version ), then you should be fine, as long as you follow the rules of GPL licensing.
http://www.gnu.org/licenses/gpl-faq.htmlSince s2Member Pro is NOT 100% GPL, you may NOT bundle a copy of s2Member Pro that we distribute with any other software product, for sale or otherwise, and distribute it yourself. This is made clear in our terms of service for part 2 of the s2Member Pro Module. It is fine for you to resell installation service for s2Member Pro, and to provide your clients with a copy of s2Memeber Pro, if/when you have purchased our Unlimited Site License, but you must NOT "bundle" s2Member Pro into a software distribution, whether that is a software product, or a set of files that make up a website, both of these are considered "distributing" and/or "resale", and these acts are strictly prohibited with part 2 of s2Member Pro.