Importance:
AWA
AWA says the recommended daily budget may be inaccurate for high CTR keywords.
AdWordsAdvisor Says: [
Link to quote]
Just another quick thought on this thread.
Another way to get a good idea if your ad is showing all the time is to check your 'Recommended Budget' on the 'Edit Campaign Settings' page.
If the recommended budget is higher than your actual budget, then your ads will not be showing all the time.
You can get an idea of how often the ads are showing by looking at the ratio between the recommended budget, and the actual budget. For example if your actual budget is $10.00 per day, and the recommended budget is $20.00 per day, then your ads will be showing for roughly half of the 24 hour day - spaced out over the entire day.
On the other hand, if your recommended budget shows as 'OK', then your ads are probably showing most of the time. (NOTE: If you have many keywords with CTR of 4% and above, though, the 'Budget is OK' message may be inaccurate - and a higher daily budget may be required in order for the ads to show 24/7.)
AWA
