Any age can use these avatar sites:
You also have to:
'In a post, please answer this question: When do you think it is appropriate for students to use real photos of themselves on their blogs and why? See if you can research this on the net and find responses from other educators. Remember to link to their post if you use information they mentioned. Hyperlink as well to this challenge post, so I can read your answers.'
In your blog you should also hyperlink to the student challenge blog as well!