Just read about Google pushing out a lovely update that caused outages all over the globe, and read this portion in the article (from zdnet, which i don't reccomend, so I'll find another link to somewhere less... um somewhere I'd feel better about linking to.)

A sysadmin wrote this angry message to Google about this:
"Do you see the impact you created for thousands of us without any warning or explanation? We are not your test subjects," said an angry sysadmin. "We are running professional services for multi million dollar programs. Do you understand how many hours of resources were wasted by your 'experiment'?"

Dear Sysadmin: Yes, yes you ARE their test subjects, according to their behavior. Take this as a lesson to NOT use their services or their products, because they treat you as a test subject, _always._

Also, they're not the only one.
(I seem to recall finding this in Firefox at one point and saying "HELL NO WTF")