One of the members on SEW forums reported about an incident with his Adwords campaign not running overnight. The whole campaign would go down while his competitors where still up. He wanted to know apparently what might be causing it. Thought it might be interesting to report on why this is happening. According to the poster they run a large campaign, 30,000 keywords plus and can't find any reasons why it would drop overnight.

According to AussieWebmaster the problem could be:

...apparently the spend optimization looks at all potential terms and saves the spend level for those higher on the CTR/CPC chain as the day progresses unless your budget is considerably over the Estimator Tool suggestion... like double

The member webpundit, goes on that its his whole campaign and not just a few potential turns. Looks like this deserves as call to a Google representative.

Continued discussion at Search Engine Watch forums - Google Ads Not Showing At Night

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