My students have really enjoyed building class wordles by hand on large sheets of bulletin board paper. We did our first one based on a book we are currently reading as a class, “The Alchemyst”, by Michael Scott. I wrote the title in the center of the paper and the students add the names of items, places, characters, etc. in various sizes, fonts, directions. I will post a picture when we are done! It is coming along nicely!
You can build a wordle on-line at the link above…
Smart Chick Teacher's Blog 
Yes! I love wordles. I’m thinking of having each student create one as a graphic to go along with their biopoems.