Tweet Cloud is an online service that lets you generate a customizable word cloud from your tweet archive. Log in using your Twitter account to create and save multiple word clouds at an address like http://tweetcloud.icodeforlove.com/DavidHolmes - Clicking the image above will take you to the saved cloud page. Each page has a date stamp at the time of creation.
You can also view clouds by people you follow that also use Tweet Cloud, via the Friends link once logged in (top right). Recently created Tweet Clouds are shown on the homepage, which is useful for discovering people with similar interests.
Note that upon generation a tweet is automatically posted in your tweetstream along the lines of: " I just generated my #TweetCloud out of a year of my tweets - http://w33.us/1ta" or whatever the period it is you choose ie. a day, a week, a month, 3 months, 6 months, a year. You're also given a choice of small, medium, large or HUGE cloud sizes.Coded by: Chad Scira aka tumblr.icodeforlove.com