Originally Posted by HowlerKarma
I'm a terrible athlete (no, really terrible). He's a terrible speller. We're both HG+ people, and we've both been extremely successful in spite of those failings.

Since much writing is done with spell-checker available, it may be more important to avoid certain usage mistakes than to remember how to spell Mississippi. Some pairs of words that are often wrongly interchanged are

it's its
lose loose
affect effect