The problem is that they aren't generally just using for a profile pic either. They create and distribute the images in "tags", blinkies, stationary, themes etc. Many of these people claim "fair use" but fair use means the images are being used for review or educating AND under fair use laws they must still credit the creator. These types of groups have spent years twisting the Fair Use Act to mean "if I don't charge for it I'm doing nothing wrong" so that when others come along they see that and then they begin doing it as well - a bit like a plague. By the time they find out they are wrong many of them refuse to give up their "fans" or the accolades from their friends and stop. The term "bored mommy's group" is often, I'm sad to say, appropriate. Making these little things is their apparantly their greatest pleasure and where they get attention. Often times people will praise them for how beautiful something is - usually they mean the image and not the tacky frames or lettering that are used on them. Those who don't create these things don't often realize that the art they are praising is stolen from an artist (especially if the artist does as SilverMoon - I've seen her around for awhile, and uses less familiar artwork) and that the "creator" can't draw a straight line or coordinate colours.

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I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use.
-Galileo