It’s exciting to have a client with a virtually unlimited budget. But every effort has its unique obstacles, and limited impression share is a big one for aggressive advertisers.

Usually in PPC, the goal is to get the best return from a limited budget. But when you get a client whose goal is to dominate the market and get as much profit as possible by spending as much as possible, you run into the problem of limited PPC impressions.

If you haven’t struggled to get more impressions before, here are a few pointers:

* Budgeting more than you can spend does not guarantee your ad shows 100% of the time

* Only one ad per account can show for any one keyword

* AdWords’ Double Serving policy is fairly clear but they reserve final judgment on a case by case basis