[asdasf]

That's an arbitrary and useless guideline, using made up numbers. If losing 1% of your potential users costs $100k in lost sales a year, and 20% of my time costs $20k, then spending that 20% time seems like a pretty good idea.

[ultimatedelman]

See listed caveat. If 1% of your users are netting you 100k, your site is likely heavily trafficked.