I don't know how ratings are conducted nowadays but if there is some way that your habits are monitored, then you are contributing to the problem by boosting this clown's listenership.
I have no idea how the ratings are done. I can only say that I have never received any sort of survey or daily viewing fill in forms. Thus I don’t worry about it. Anyway, I’d rather occassionally watch O’R than c matthews and be continuily barfing.