One of my readers suggested I tackle the unconscionable phrase honing in.
Unconscionable might be a little strong, but it's certainly one of those usages that drive editors bonkers.
I was all prepared to lambaste this obvious misuse, which is at best an eggcorn and at worst a sign of the collapse of English literacy, but then I started researching. And something strange happened: I got a more historical perspective on the two alternatives.
Don't get me wrong; I will stand by homing in to my dying day, but my vehemence will not be so, well, vehement as it once was.
You can draw your own conclusions after you read what I wrote about the subject at Copyediting.com in the post "Honing and Homing In: a History, a Choice, and a Future."