I strongly advise all Google AdWords advertisers to read and heed this excellent Search Engine Land article by Andrew Goodman. It describes a relatively new factor, Account Quality Score, that can make or break new and/or inherited AdWords accounts. This one kept our company baffled and busy with an inherited account last summer, and caused us to burn way too much time and money.
Must-Read: Andrew Goodman on Avoiding Bad AdWords Karma
