I'm on the verge of wiping my adwords account, and deleting the lot. I feel that Google are not in business to help their clients, just to make money out of us.
I spent a lot of time on one page last week, researching keywords on a page that provides a really good unique service for free. I got everything spot on, its a really nice page, that is also very useful and functional. I create one campaign for it, with only 15 keywords which I thought were most relevant, and it all paid off, got 10/10 score on them all.
After the ad approval, all the keywords are no longer relevant, I give up. Google to me is like an old x-girlfriend that is doing me no good, I should really leave behind, but yet had the strength to do it! I do everything that Google wants, but its never enough.