How to properly license a WordPress theme?
I’ve built a WordPress theme on an existing theme designed specifically for creating themes (like a framework but not as extensive). And after several hours of coding and testing I’m kind of wanting to sell it. However it seems to me that the original theme is GPL licensed. So I’m wondering if it is legal for me to sell it and keep it under the GPL license or not? (If not I’ll just give it away as a freebie to promote my website.)
Yes, you can sell it provided you keep it under the GPL license. You can charge whatever you want, but you can’t keep anyone who buys it from giving copies to their friends or posting them on a web site.
There was a long debate with wordpress themes. The conclusions: You practically get money for the support given for the theme, but anyone is free to use it if he finds it somewhere else ( friend, torrent, google ).