We do not require donations for material posted here (see the TaC of the CPOL:
http://www.codeproject.com/info/cpol10.aspx[
^])
If you want to make a donation to an author because you seriously appreciate the effort he has put in, then you should discuss that with him, via the messages section at the bottom of the article concerned. It would have nothing to do with the code project in any way.