If you are an experienced computer artist that swear to applications like PhotoShop, Gimp or CorelDraw-- you might find paint.net to be a little retarded. But compared to other freeware paint programs (like Rita) paint.net is exquisite and simply a jewel. It's great for random doodling, clipboard activities, detailed drawings or even light photo manipulation! Look at this for example:
Just a regular photo:
A few clicks in paint.net:
Both effective and impressive! (Look at the eye, seriously - it only took a second using one of the effects!) I am baffled and pleased. Paint.net and I, we shall be friends.