how can you share or sell a project you have purchased by yourself?
even if you improve it, it would be wrong to put it in the forum.
you can contact the author and ask him if he agree or give him the advice how to improve it and if he want he can do it but putting his source back to the forum with some improvements for sale or for free is really wrong.
anyway everybody can has his own opinion about that topic. so i think i made mine clear.
i am out, have a nice discussion