Links

A cliche and over used words programhttp://www.mediabistro.com/galleycat/spot-cliches-spot-overused-words-with-free-writing-program_b53352

A word search for confusing words.
http://www.confusingwords.com/index.php

Grammar made fun!
http://grammar.quickanddirtytips.com/
More tips then you can imagine!
http://www.dailywritingtips.com/