I use Google constantly, but sometimes, their business model really confuses me.
They took an existing business model (placing advertising on their search pages) and made it horrible, deceitful, and annoying, and they become one of the fastest growing companies ever because of it.
Now, before the flames begin, I know I am simplifying it greatly. I know there are many other benefits to Google, and that advertising seemingly only makes up a small portion of Google, but the truth is that's their primary source of revenue.
We've used them for clients, and I absolutely hate Adwords. They're ineffective at best. Costly and ineffective at worst. And, they were charging the highest rate we had allowed to place the ad on a page where no other ads showed...erm, it's only supposed to charge the highest amount if that's what it takes to outplace the other ads, it should charge the lowest rate if there's no other ads.