Since your online and talking about it.... I have used Krita and I thought it was alright but not really great. I also think Gimp is alright but not really great too. I almost thought Pinta was great but then discovered a couple of minor things that meant I couldnt use it. So is there another linux based paint app thats quite simple but contains enough basic stuff to use. Round brush, draw boxes, lines, fill, blur, sharpen etc.