> So that license was suggested by someone at FSF and I ran with it because I don't know enough about licensing.
Disclaimer: I care a lot about software licenses and have used pretty much every free software license around. If you can name a free software license, I've probably released some code under that license.
You can use the regular GPL and it will be fine here (it will not require anyone to release any code from the rest of their website).
If you use other GPL-licensed software in your project, you should use the GPL[0] for this project too.
Do not use the Unlicense - it's legally shaky (and not compliant with GPL-licensed software you incorporate).
[0] You can use the AGPLv3 if the GPL software is all GPLv3, but I would not recommend doing so.
Disclaimer: I care a lot about software licenses and have used pretty much every free software license around. If you can name a free software license, I've probably released some code under that license.
You can use the regular GPL and it will be fine here (it will not require anyone to release any code from the rest of their website).
If you use other GPL-licensed software in your project, you should use the GPL[0] for this project too.
Do not use the Unlicense - it's legally shaky (and not compliant with GPL-licensed software you incorporate).
[0] You can use the AGPLv3 if the GPL software is all GPLv3, but I would not recommend doing so.