Phones with Browsers

I find the statistics about search migrating from PC’s to phones to be particularly compelling.  That is, according to wikipedia, there are 850 million personal computers in use, and 3.3 billion mobile telephones (as of November 2007).  

Decrease Bids to Improve ROAS

Your Adwords CPC prices are set by auction.  What if the economy were slowing?  If 2 of 15 advertisers were to withdraw from your ad space, or slow their ads, then why shouldn’t the results of that be felt in your actual average CPC?  Maybe it can be.  When is the last time you tried DECREASING your Adwords bids?