The fact that Windows fonts still default to displaying backslashes as yen-marks has been a perennial annoyance for me. A conversation about it today provided a wonderful illustration of just how irritating this can be.
Here is what I saw:
Here is what someone else saw:
This is just a humorous example of technology gone stupid, but it can be a very real disaster in source code (escapes are suddenly uncertain) and quite a few pieces of small business software (and even modern websites right now) have ridiculous output problems where a price is listed as “\50,000” — which isn’t such a big deal until you have a grid with invisible borders and see something that suddenly looks like a pricing equation instead of a statement of price: “500,000pc \ 50,000” Oops!
KILL THIS WITH FIRE WHEREVER YOU FIND IT.