Lindsay's boss is hardcore about misused quotation marks. These are all three from her work. My favorite is probably that the employees "rock" - that is to say, they don't actually play guitars, bass, drums etc. However, I think we can all agree that poor cell phone etiquette is not very lady/gentleman-like.
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".