I found this quiz over at Outwit, Outblog, Outsnark.
It's a quiz that tests your knowledge of Commonly Confused Words. Give it a try!
Here are my results:
posted by Michael Hickerson at 3/09/2005 12:02:00 PM
You scored 86% Beginner, 93% Intermediate, 93% Advanced, and 66%
You have an extremely good understanding of beginner, intermediate,
and advanced level commonly confused English words, getting at least 75% of each of these three levels' questions correct. This is an exceptional score. Remember, these are commonly confused English words, which means most people don't use them properly. You got an extremely respectable score.