Interesting. Thanks. What do you consider the difference between 1st recycling and thereafter? I.E. why do you clean the first time but not thereafter? My initial thought would be that, with the exception of the outside of the bottle, it would be the same situation after drinking a commercially made brew as a homebrew. But maybe I'm missing something.
I do the same thing as Uniondr. Reason is that when you're first recycling a bottle, you may not know how long it was sitting around, or if any gunk dried up in the bottle. Also, there's the label to remove, so you might as well soak the inside as well. You have more control over the future uses of the bottles, so an immediate thorough rinse should work. By the way, all of my brewing equipment gets cleaned after use, and before the subsequent use. I use Easy Clean, although I'm sure Oxyclean works just as well. After cleaning, I sanitize with StarSan.