Several online word cloud generators do not require a log-in name, including Wordle, Word Cloud Generator and WordItOut. These generators make word clouds out of any text, blog or website.
Word cloud generators use a source text to make a collection of the words used most often in that source text. The font size of the words in this group depends on frequency of use, with the most frequently used words rendered the largest. A user of these online generators can customize a word cloud's font, color, layout and size. Word Cloud Generator even allows a user to manipulate a word cloud with graphing and other mathematical formulas.