Why is it SO inconsitent? On some days I have a very good CTR...but then my CPC is very low. So my earnings are very low. On other days, my CTR is incredibly bad, and yet CPC is very high, and my earnings are not THAT bad. I understand that it always changes, but its just strange how for a whole week I can get bad CTR, high CPC....then the next week, the other way around. Any ideas?