Wonderful. Love the voki.Okay, so I was thinking of some uses that might work for you. One that quickly sprang to mind was blogging about safety issues in the lab. You might do this as an open ended question to the class that the students would respond to through comments. You might have them comment on safety rules, or problems that might occur if those rules are broken. You could also post links to articles about safety rules and issues.You could post about science news - you could even let the students post links to artciles that they have found.Another would be posts about ethical questions concerning science.Any and all of these could be required for grades via comments both to your posting and to other students comments.