This would be useful if you fix bugs and announce new versions by build no. on your website! Perhaps a third number would be the right way to publish bug fixed versions?
Nevertheless: its an amazing tool!
btw.: There is no link to an article of the Feature of the Week "Compare It! can compare MS Word documents!"
In fact it is so, currently this build number is increasing automatically, and sometimes I even announce about important bug-fixes updates. I just ahve to make this number visible in About, thanks for suggestion.