Technically the "tainted" attack could even come from programming books that offer code snippets. Unless you have a signed release from the copyright holder of

Technically the "tainted" attack could even come from programming books that offer code snippets. Unless you have a signed release from the copyright holder of the book, you are also tainted. Abstrd, but true according to what you're saying, if you can prove that I copied it. Now, assuming you did download and peruse the source code for Free_skype: fine. Now prove it.