GIMP version 2.4 or higher supports the Photoshop .ABR brush format! Files must be copied to the directory /gimp-2.x/brushes/ (where x=version number) or /usr/share/gimp/2.0/brushes/.
Do you want to visit Las Vegas? It's just a city recreation and entertainment. For example only one of which casinos are worth, I'm not talking about the famous hot tubs in Las Vegas which is famous throughout the world. So I advise to visit .... I strongly advise