Rating System?

If you are ever looking for an enchancement, i would love to see a mechanism that would allow users to rate the accuracy of the songs posted.  I spend a whack of time looking through the dozens of versions of each song looking for the one that got it most correct.  We could then list the results of a search by these ratings and cut down our search time.  Also, maybe even a way to "link" chord corrections to the orignally posted song - say if they got it mostly right, but you wanted to suggest a small amendment - rather than reposting the whole thing and creating yet another version, you could post suggestions - much like a blog might have a comments section at the bottom.  Just some thoughts. Great service - i use it almost every day!