Am I getting repetitive? Good way to check

I stumbled (literally, not using my favourite time-wasting tool) on Wordle from another friend's blog and could see straight away how useful it can be: analysing the amount of times 'rage' or 'crusty jugglers' (sorry, Hot Fuzz joke) is used in a Daily Mail article or how often try-hard cool reporters talk about Tweeting on their blogs (I'm avoiding it). Sure, it works just like the tag tool but looks much better!