Internet marketing on search engines is easy for popular Web sites. Since such Web sites attract a substantial number of visitors, they are attractive venues for advertising placements. For instance, Google, the world's leading search engine, typically includes such sites in its Internet marketing campaign known as Google Adsense.

To avail of this money-making opportunity from Google, you first have to enroll in the Google Adsense program for Web site owners. If they deem you popular enough, Google will place some of its Google ads on your site, in the form of texts, images, and video. These ads are pay per click revenue earners and an excellent Internet marketing tool. Every time a visitor clicks on a Google ad, you, the site owner, gets to earn something in exchange.

Aside from a Web site's popularity, Google also takes into account the site's content, its ranking on search engines and, if relevant, the site's geographical location in choosing where to place its Google ads. These are elements which you must pay close attention to in your Internet marketing efforts.

Unlike banner ads, which can sometimes be so large that they stick out like sore thumbs, Google ads are much smaller and less intrusive. Their subject matter, which naturally relates to your Web site's content, can even complement your site, which is something that cannot be said of banner ads. Given these factors, it is no surprise why Google Adsense has become a very desirable method of Internet marketing.

Your earnings from the Google Adsense program depend on a complex pricing model and is based on advertisers' sealed bids. One key factor that determines the earning potential of such ads is the way they are positioned and presented on your site.

Aside from Google Adsense, other attractive Internet marketing vehicles of this nature can be found at the Yahoo! Publisher Network (YPN!) and the Microsoft adCenter.

Once you have attracted ads from any of these major search engines, you may optimize them to earn even more. Don't simply put them on your site and hope visitors click on them. Try playing around with their placement, fonts, colors and layout to make them more attractive to click.

Here are some Internet marketing tips when dealing with ads from Google Adsense, YPN and the Microsoft Ad Center:

1. Try to blend the font type, font size and color of the ad with your site. Integrate the ad with your copy. The more relevant the ad has to your site, the greater the likelihood that visitors will click it.
2. Position the ads as high as possible on your Web pages. This will increase their visibility and make them easier to click.
3. Position visuals and other images close to the ads. Visuals are one of the most visible elements of a Web page. They also help your ads become more visible.
4. Use ad sizes that aren't typical. Long-time Internet users sometimes develop a natural aversion against ads and simply won't click them. Hence, if your ads don't look like ads, they have a better chance of serving as an effective Internet marketing tool.