Amy sent in this same sign a few months ago, and writes back to demonstrate that the quotes have been removed. While I don't consider the goal of this blog eradicating confusing usage (rather, we like to have fun with it) it's pretty funny when people change. Thanks for the update, Amy.
I don't usually post the following: newspaper headlines, personal email, craigslist postings, unprofessional websites. I also tend to not crosspost things from other blogs, since I have so much unique material waiting for me to get to it.
Things I see a lot: silica gel "do not eat"; hair dryer labels; inside the bus "do not drill"; Wal-mart sign about IDs; coffee machine with "2" cup sizes; employees must "wash hands".