Words people get wrong

Isn't it annoying when educated people get simple things wrong?  I'm talking mainly about those egregious errors that creep into conversations or into announcements of events.

Your nuts or you're nuts?

I often find myself invited to 'a colloquia' when there is only one of them.  I find that pacifically irritating (when it should have been specifically) .

People always mix up infer and imply.  There was a great scene in the movie 'Wilt' where Griff Rhys-Jones is playing the part of a college lecturer who is being interviewed by Mel Smith who plays a policeman.  Mel says "Are you inferring that we're all thick?" and the reply is "No, no, no, I'm implying that you are all thick and you are inferring . . . "

Affect and effect constantly get confused too.  Can't people work out that one is a verb and the other a noun?  (OK . . . if you are a philosopher, then effect actually is a noun, but most people don't know that.)  They can't even 'hone in' on a solution, when homing in on it might be easier.

All the time people mix up their, there and they're.  They can't spot the difference between you're and your, or where and were.

And when they agree with you they write 'here here' when they really mean 'hear hear'.

Please concentrate folks!