Obviously you must strop before each shave - that is a given. I understand that you strop to realign the edge of the blade before actually shaving. As that is the case, I have heard some suggest that they strop both before shaving, and after shaving.

What is the purpose in doing this? Is it recommended to strop both before and after, or is there no gain in doing it more than the one time before shaving?

I don't know if this is purely a preference thing, or if there is actually a difference in performance between the two.

What do you guys recommend, and why?