And now, if you use the icons you made in your own custom map, random people will get pissed at you for "stealing them from DotA". It would've happened the same way for any similarly popular thing. I'm sorry that your icons have been practically scorched from the face of the earth. Maybe you could find recourse in the assumption that DotA would not exist if it were entirely exposed to public use from the start. Also the ability to say that some of your work was used in DotA does sound pretty nice.