WPU stands for Weird Processing Unit, which is basically series of various experimental processors (architectures), that try to be interesting, new, original, extraordinary, different or just plain weird. WPUs try to be original and playful and they usually go beyond the boundaries of convention - things we consider normal.
They don't always intend to compete, replace or improve standard processors, or fill any gaps on the market: WPUs don't try to find any gaps, they rather go to the edge, then go even further and build there :-) Some of them are however coming up with interesting ideas, that can be actually used someday.
