  == Header enforcement ==  I wouldn't know exactly what percentage of likeness that must hold to delete a comment that has been altered.  It's actually easier to just ensure that the bot itself tries to avoid inserting the comment twice.  I could have the bot make a special pass to do that... but how I dealt with it on the other pages was that I didn't care since the bot would empty the sandbox and rake it clean.  In the case of the Introduction page, I can have the sandbox rake it of similar-like comments...  I would need some idea what I'm looking for really, it would be slightly difficult to do... just a lot of regular expression matching.   