I tried the word 'parallelogram'. The web page keeps changing 13 letters to 12 letters in the number of letters box then saying it can't find a word. I've never heard of 'draw something' as a game before so perhaps I'm using a word that isn't allowed or something. Stuff like this is handy in teaching especially if it works on a mobile phone (blackberry for teenagers, iPhone for colleagues :-)
Here ya go: https://github.com/stevekrenzel/omghalp