Wordle is a toy for generating "word clouds" from text that you provide. The clouds give greater prominence to words that appear more frequently in the source text. You can tweak your clouds with different fonts, layouts, and color schemes. The images you create with Wordle are yours to use however you like.
CSS3 Generator is a neat place where you can chose new css features from a list and it will give you a code for how to insert it into your style.css file.
It's pretty neat so check it out :)