Thomas writes about the Your/You’re confusion on this quality sign:
I was wavering between sending this to you guys or to failblog.org, but I figured it’s more a terrible abuse of apostrophes (and a wonderful example of irony) than a strict FAIL. I saw this in my hometown on the way into work on Monday morning.
It looks like rather than obscuring the lower-right leg of the X to make the Y in QUALITY, they should have broken it off to make an apostrophe for YOU’RE. Perhaps they were also out of the letter E.