Something that I have not really grasped is the idea of bitcoins. Especially since everybody can mine for it using a powerful GPU. I wonder why is GPU used for this purpose? Is the work done by GPU used by some huge organization or is it just wasted resource that goes into simulated mining?
I mean for example SETI uses your GPU for the purpose of finding aliens, but what I can see of bitmining it seems for no actual purpose than wasted resource.