joined:Apr 19, 2003
Once in a while, you'd get contacted by a google account manager/optimizer/adviser, whatever, telling you they have some suggestions for you to boost your income. One thing they always offer is that you should put more ad units on your pages where you already have 1-2 units. You'd think that must be a good suggestion to follow. If you do, you would always see a drop in your overall EPC and income despite you may get more clicks by running additional ads on your pages. This happened to me at least 3 times and each time I ended up removing the additional ads suggested by the adviser.
From all these experiences, I come up with a theory: the so-called advisers are commissioned by google. They took from you a good chunk of your earnings from the change you made. That's why you earn even less after running more ads on your pages. They are greedy and thought all the clicks from your new channel belong to them. Correct me if I am wrong.