Does anyone know why the AdWords traffic estimator tool shows a large number of monthly searches for some keywords but 0 estimated daily clicks (regardless of the value entered for Max CPC $)?
As an example, I entered the keyword "alerts" with a $100 Max CPC, and received the following estimates: 823,000 global monthly searches, 450,000 local monthly searches, and 0 estimated daily clicks.
I also tried the keyword "personal search," which shows 22,000 global monthly searches, 12,100 local monthly searches, and estimated daily clicks of 19.
Because personal search is more specific, you might actually get up to 19 clicks per day based on the estimates that google gives you.