I've seen a serious trend among webmasters and website developers the last couple of years focused on getting good scores on speed testing websites like gtmetrix.com or tools.pingdom.com.
These testing tools will analysis your website or blog from very specific areas, giving you some general performance indicators like how fast your website loaded, page size, the number of request and things like that.
But also specific performance insights like the grade for leverage browser caching, minimize redirects, query strings from static resources and other stuff like this your developer should know about.
What I've found is that bought webmasters and developers will try by any means to trick these test and mask the problems just so they can get a good overall score.
The result will be a slow loading website from a user's perspective but that same website will score a 94 out of a 100 in these speed tests tools.
What do you think, should we optimize our website for users or testing tools? Is Google able to figure out the difference?