- When people can't tell the difference between 'There', 'Their' and 'They're' - It's not that bloody difficult. There refers to a PLACE: "It is over THERE". Their refers to someone's possession: "It was THEIR ball". They're means they are: "THEY'RE tall".
- When people cannot tell the difference between 'Then' and 'Than'. SERIOUSLY! I just don't understand how people can get this wrong. I know it's only a one letter difference and the a and e one the keyboard aren't all THAT far apart but still... "The white wine was much sweeter then the red wine" - That doesn't even make sense!!!
- When people cannot tell the difference between 'Patience' and 'Patients'. "I'm running out of patients." - Oh I'm sorry to hear that doctor. Wait, you're not a doctor? Well go back to school then!!!
- When people cannot tell the difference between 'Lose' and 'Loose'. "Is that the one where they loose their memories?" No it isn't. It's the one where they LOSE their memories.
- When people cannot tell the difference between 'Your' and 'You're'. Again, not freaking difficult. Your = possession: Your ball, your brain, your stupid bloody mistake. You're = you are: You're a moron.
I should also add that a lack of the most basic spelling ability also pisses me off immensely.