So I was scrolling on Pinterest - as one does - and I came across a post stating that the number John's blog is stuck on in I believe ASiB was the same as the year Sherlock Holmes fell into the Reichenbach falls in the ACD canon, 1895.
Now, this in itself is wild, but then my mind brought up another thing I saw a few days ago, a meme on Tumblr (if someone wants the link I can send it)
So
The reason they left London in 1895 (I assume in the same story with the Reichenbach Falls but I can't know for certain) was described as 'circumstances in which I need not enter' or something and people in this thread connected it to Oscar Wilde's trial for 'gross indecency' (aka being gay) which took place in the same year.
N o w, as a reminder, John's count on his website froze on 1895. In this year, Oscar Wilde was sentenced for gross indecency, Holmes and Watson went out of town presumably for that reason AND the Reichenbach Fall of the original stories.
While the number could stand for the original Reichenbach Fall, I don't really see where that would go BUT what if it stands for Oscar Wilde's trial? And for ACD Holmes and Watson being out of town because of it?
In my opinion, if we combine this with the 'Irene ships Johnlock' theory I read on @inevitably-johnlocked 's blog (it's a lot more complicated than that but that she basically knows something is going on), this could be her doing, trying to make fun of them or give them a hint in the right direction. Who knows? Not me, I'm just here to collect the puzzle pieces.