[ctdonath]

My main use of "word cloud" generators (wordle.net in particular) is to take large texts, show all words except the most common, and - this is key - highlight particular words.

Prime example: http://www.wordle.net/show/wrdl/1507537/Reservoir_Dogs (the easily offended may refrain)

To do this with Wordle, I have to use a word processor & spreadsheet to count the words, and specify the RGB color for each (all the same except the few I want to stand out, however common/rare). The "common words" removal becomes problematic when the words to highlight are in that removal list (say, when rendering a speech by the Obama to highlight frequency of "I", "my", "me", etc.). Ergo, would be nice to render all words no matter how rare, specify default and per-word colors without marking all, and indicate specific exemptions from the "common words" list.