Have you noticed my LJ thread is called Inappropriately Used Apostrophe's?

I proof read wherever I go, whether I want to or not. Signs, menus, guild chat on WOW, novels... (I often wonder if authors re-read their own novels and hit their heads on desks when they find said errors in permanent text).

My personal favourite? This one comes up alot!

Sandwiches
Pies
Pizza's

WHY GOD, WHY? WHAT DOES THE PIZZA HAVE? The curiosity will kill me one day.