A practical example
On a related note Google has already acted.
The wife of the former president of Germany, Bettina Wulff, has been alleged to have worked as a prostitute in the past. As far as I know the allegations have never been proven correct and in fact have been proven in correct. However, the interest in the subject was so great that Google promoted some of the terms to "search as you type". It was argued that this continued to spread unproven and possibly defaming allegations without qualification. Just imagine something similar with your own name and something like "child sex offender".