I just started using adwords and am having some trouble and confusion. I have two full content sites, PR 4 and 2, that I'm running small test campaigns for. I loaded up a billion keywords for each and set the appropriate bids, etc. Everything is fine, until the next day. The QS drops from 7-8 to 2-4 for most, not all, of the keywords. Then 80% of the keywords say the front page bid more than doubled, etc. The articles and pages of the site are loaded with the keywords chosen, both in content and meta tagged.
What's the deal?
What's the deal?