Wordle http://wordle.net/
Elements of Fiction http://www.readwritethink.org/materials/lit-elements/overview/
A great resource with a wide variety of dictionary sources http://www.alphadictionary.com/specialty.html
Good online dictionary http://www.yourdictionary.com
Merriam Webster Dictionary online http://www.m-w.com
Cambridge online dictionary http://dictionary.cambridge.org
Rick Riodan website http://www.rickriordan.com/
Greek mythology info http://www.adifferentplace.org/mythology.htm
Research links