What exactly is a cruserweight?

[Someone1001]

So...I was watching Smackdown, and took note that Gregory Helms is actually taller than Benoit. Checking out their bios on WWE.com shows only a 5 pound difference between the two. I don't quite remember what the requirements for being a cruserweight actually are...but I suppose the only requirements in the WWE is that, a) they be a jobber to anyone outside their division, b) they have little to no air time (and therefor no heat with the crowd...), and c) win the Cruserweight title at least once before fading into obscurity (and Velocity). Why the WWE is so unfair to their talent, we may never know. Right now, the division is being moderately pushed, but is it just their way of giving fans of TNA's X-Division a reason to watch the WWE? And if so, are they just going to pull the plug on it after Wrestlemania (having pretended that they gave it a fair chance and it didn't get over)?