Perhaps we should all attach pics of us in our helmets and ask forum members to rate them according to the following:

1) Excellent, you should be on the next cover of "Cycling"

2) Pretty good, as you cycle by people comment "That helmet was remarkably well proportioned to that rider's head!"

3) Mediocre, get a new helmet if you have the cash.

4) Getting bad, start saving your money.

5) Poor, get a new helmet/head immediately even if it requires selling some blood.