The folks on the AdWords support team often hear the question "why can't I see my ad?" If you've ever had this question yourself, you'll probably know that there are a number of reasons why an ad may not be appearing.

To assist advertisers in getting to bottom of 'can't see my ad' mysteries, there are some excellent resources available. One of these, the new "Can't see your ad?" troubleshooting wizard, will walk you through an ordered list of possible reasons why your ad is not showing.

And, of course, the already popular Ads Diagnostic Tool can help you to identify why a particular ad, or group of ads, may not be appearing -- as well as provide tips to get things up and running again.

If you ever find that one of your ads is not running as expected, give these a try.