One question for other Adwords users - have you noticed a penalty for putting the campaign in pause mode? Years ago (3+) we used to pause our campaigns during known holiday times - we sell to mostly business-minded users and found that, on Christmas Eve and Christmas Day, we were getting clicks that would never, ever convert (3+ years of data). So we started pausing campaigns during those times. We found that when we…
I have seen what appeared to be a penalty from pausing a campaign once.
More detailed write-up at http://www.eanalytica.com/blog/unforseen-risks-when-stopping...
Perhaps similar to your experience?