Mario Mey wrote:
I want to put a license to it. Where should I get information about types of licences?
I don't think in any restriction...
Go for public domain then.
I only would want to know where, when, how and by-who it was used. Only that.
Cardware licence : Postcardware, also called just cardware, is a style of software distribution similar to shareware, distributed by the author on the condition that users send the author a postcard.
This is similar to beerware. A variation, Emailware, uses the same approach but requires the user to send the author an email.
Postcardware, like other "novelty" software distribution terms, is often not strictly enforced.
(from: http://en.wikipedia.org/wiki/Postcardware)
Enjoy,