Check out this analysis of Emojicon usage on Twitter.
My Twitter Weighs a Ton has retired.
My Twitter Weighs a Ton grabbed a bunch of your tweets and counts how many times you use any given word. It had a good run, starting in 2008, but I am no longer am maintaining it.
It grouped similar words using the Porter Stemming algorithm. This process reduces words to a common roots, allowing us to identify similar words like “fishing”, “fished”, “fish”, and “fisher”.
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Here's the original blog post. Here's a sample of what it generated for MC Hammer.