Then and Than

(This one's for you, Sam. )

Errors in word usage often stem from confusion between the uses of two similar looking and/or sounding words. The use of then and than is one such example. The difference is simple, and once noted, any confusion in usage will be easily fixed.

Then: often used to refer to a certain time ("at that time" "after" "that time") or to mean "in that case."
Examples: First I will come home, and then I will go to the store.
I didn't even know you back then.
Then I just won't tell you these things anymore.

Than: Used for purposes of comparison.
Example: His feet are bigger than his brother's.