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Stupid high bids are their way of telling you they don't like your ads or biz model. But their algo gets it wrong so many times and they don't tell you what the prob is except to send you lots of auto spam.
People are leaving adwords left right and centre where I am, they can't justify the time and hassle of up and down cpc's and quality score nonsense or they let an agency handle it if they have the margins but most I know are bailing.
Try MSN - better conversions all round and far far better use of your time.
Yet price shopping sites and amazon.com have much worse pages with 1-2 bullet points and lots of ads and they keep on showing up.
I guess the secret to this is to generate enough buying power from google to buy bulk keywords with less automated scrutiny?