Hi Retimer, thank you for your submissions! The choice of licenses for this is a bit strange, however - public domain/CC0 would effectively allow people to use any license they want, so adding GPL to that is a bit confusing. Would you mind clarifying under what conditions you want to allow the use of these?

Hi Retimer, sorry for bothering you with all this license stuff. It sure is boring compared to making art, but we can't afford to slack of in this area. Do you want the same license for all your submissions? I see you used a different set for some other pieces.

If you use CC-BY you can mandate the attribution. If you use CC0, people are allowed to use it however they want (you can still make requests, but they don't have to do what you want). Using multiple licenses means users get to choose between them.

Here are links to human readable summaries for CC0 and CC-BY, respectively:
http://creativecommons.org/publicdomain/zero/1.0/
http://creativecommons.org/licenses/by/3.0/

I know the submission form can be a bit daunting. Do you have any suggestions on improvements?