snipping for brevity:
However, let us not forget the spirit upon which BookShare is based. It is not professional scanners -- though some of us are contributing vast amount of material either through scanning or validating -- but it is a medium for individuals to share what they've done. And since folks for themselves don't necessarily strive for perfection, what they attempt to contribute will be just that.
Sorry, not trying to be too contentious here, but what Mike says makes a lot of sense to me.