The GNU General Public License (GPL) Question.

[calorie]

Originally Posted by KirbyDE

I don't think this should be a problem.
You can do whatever you want with GPL software, however derived software must be GPL again.

Agreed, if you keep the copyright in the code.
Plus, you currently do not have to redistribute.
And, you currently do not have to link back.

phpBB has a decent GNU GPL article here.

Just to add to the topic...

- definition of free software

http://www.gnu.org/philosophy/free-sw.html

- selling GNU GPL software

http://www.gnu.org/licenses/gpl-faq....eGPLAllowMoney
http://www.gnu.org/licenses/gpl-faq....lowDownloadFee
http://www.gnu.org/licenses/gpl-faq....PLCommercially
http://www.gnu.org/philosophy/selling.html

- obtaining GNU GPL software

http://www.gnu.org/licenses/gpl-faq....anIDemandACopy
http://www.gnu.org/licenses/gpl-faq....bilityToPublic
http://www.gnu.org/licenses/gpl-faq....cePostedPublic
http://www.gnu.org/licenses/gpl-faq.html#UnreleasedMods