This is a fascinating idea but also more than a little scary.
Several things came to mind when I read the article:
1. Viruses have been responsible for so much human suffering, it's about time they work off their debt to society.
2. They state that the virus used is harmless to humans and attacks bacteria... That might be true... But once they modify the virus... Is that still true?
3. If it becomes possible for the virus to be infectious... Will it then start building batteries in my sinuses?