So here's something puzzling about AdWords ...
When I started my 5 domain-advertising campaigns a few weeks ago, it only took about 15-50 cents for each of them to get onto the first results page. Those numbers have been steadily creeping upward, and I was adjusting my bids accordingly.
Now, almost all of them supposedly need a bid of $1.00 or more to get on the first page (and some are much higher)! Why do I get the feeling that Google is just playing me? (On a couple of those terms, there are one or ZERO ads on the results page - but they are telling me that my 40-cent bid isn't enough, it needs to be $1.00! Are they really turning down free money?)
Weird and suspicious behavior ....