WORDLE

Wordle is an online app to creat ""word clouds" from the text that you hahave selected. It select the words that are the most prominence or appear more frequently in the text to creat the cloud.

For teachers word clouds are a fantastic resource and teaching tool because you can use to input a class, a topic.
http://www.wordle.net/create

ADVANTAGES

• It is free and on line. You need to creat an a free acount.
• You can use the text you want.
• There are too many colors for your "word clouds".
•  It allows anybody to really imaginative and creative word clouds.
• You can use it in your classroom, post it on twitter or on your blog.
• It automatically emphasis words that are repeated and increase them in size.

DISADVANTAGES

• Wordle only hasone size for the whole image.
• It doesn't work in Chrome. Only in Internet Explorer o Safari en Mac.