Google AdWords is an advertising system that follows the pay per click model of advertising. This means that it doesn't cost anything to display your ad on the Google search engine results but if someone clicks o your ad, Google will charge your credit card the amount you have setup for the particular keywords for which your ad got displayed. There are 3 ways to cut down the cost of your AdWords campaign.

1) Opt out of content network program..

The AdWords system has two parts as well as publishing the ads is concerned. When a marketer creates an ad in his account, it becomes "live" immediately. The ad gets displayed on the Google search engine's result pages as well as on the thousands of publisher's web pages that have applied (and approved) by Google under the AdSense revenue sharing program. Opting out to publish your ad in the AdSense (called as content network) can dramatically lower AdWords cost.

2) Set a lower content bid.

If you want to at all display your ad in the content network (for huge exposure) be sure to lower the bid amount. The lowering of bid amount for content network will make a big difference in ad budget in the long run.

3) Write relevant ads

By writing relevant ads, your ad gets more clicks and more clicks means less you pay. Google's pay per click system is slightly different than other systems. With AdWords the more clicks your ad gets the less you will have to pay. I hope these tips will benefit you in your online business practices.