When posting a SotD and indicating a blade had (3) uses does that include the current shave eg. "this was the third use of the blade" or is it describing the condition of the blade at the start "this blad had three uses" and your current shave would be the fourth? My intuition tends to the latter as it's a description of what equipment you brought to the task but somehow it occurs to me it might be sorta ambiguous?
I include the shave being posted. I don't think of it as the state of things going into the shave. Rather, add the suffix the number: "this the n^th use of this blade." The blade is the only item that includes this metric in SOTD, and it's not a consistent metric, anyways. You might shave daily and do two passes, while I might wait several days between shaves and do three passes. I shave my face. Some wear facial hair and only partially shave their faces. Some shave their heads. The amount of wear between users isn't consistent. But, the standard format includes it. Otherwise I wouldn't keep track. I'm more interested to know how many times I've used a boar brush, or a soap.
You can do it however you wish; I doubt anyone'll police you. Hell, I list the number as a question mark half the time because somehow remembering how many times I've used a blade and adding +1 is too much math for me.
But from what I've seen, most people seem to use that number as the N-th use. The first shave will have no number, meaning it's a fresh blade, and the second will have 2. So that's how I've been doing it as well, whenever I remember.