Meet StatSheet's Lead QA Tester: GoogleBot – StatSheet.com ChangeLog

Instead of writing a bunch of test code to go through all the various permutations that could result in errors on the front-end, I found GoogleBot (Google’s web crawler) was doing a pretty good job of scanning the whole site in a timely manner. I set up code on the front-end to email me anytime there is a Server Error. I found early on that when I’d push out new changes, GoogleBot would find obscure bugs with infrequently visited pages much quicker than I (or even my users) could.
(Link: Meet StatSheet’s Lead QA Tester: GoogleBot – StatSheet.com ChangeLog)