[DanielBMarkham]

My new strategy is to instrument the hell out of things -- but only to look at data when enough of it has accumulated to be meaningful.

I think you can make a mistake of measuring and trying to understand data in increments that are so small as to be a waste of time. It can become just another way to not be minding your knitting. Server down? You need to know right now. Knowing that somebody considering buying your product is using a iPhone in New Zealand? Not so much. Computers are great at catching and storing all sorts of stuff. Unless it's critical, best to play with the bells and whistles in controlled deep dives, not as part of a Tony Stark video-game-master-of-the-universe thing. I love bringing up my real-time site metrics and watching all sorts of folks that I am helping. I also like to watch my stock portfolio move throughout the day. But I've found that there's a lot of naval-gazing going on there and not much of anything useful.

Don't look at measurements that generate no subsequent management activity.