Hey, it's an imperfect system, that can't really be perfected. It takes time to type out an answer. People understand this, so I say just leave it, or fix it if it isn't quite right. Three answers are better than none :) And, if you look at it this way, seeing more than one person come to the same solution separately gives that response an added level of validity. (either that or points out a common mistake :)

                - Ant