Mouth
Well-known member
Sorry, but I'm going to have to claim the same.I don't think you understand what a GPL license does...
To limit what can and can't be used in a program is more of a pain than you might realize. There's no way I would give up copyright and go with GPL.
Copyleft applies when you modify the same software. An xf add-on and a vb add-on are not considered the same software. Otherwise, if I purchased an XF version of your add-on then I'd also automatically be a license holder of your similiar vb add-on too. With copyleft, your vb add-on would not be considered downstream of your xf add-on. It's explained nicely @ https://opensource.org/faq#copyleft