Make money with Google Adsense
If you have your own website or blog, you can use Google Adsense to make money. Google Adsense is leader in advertisement serving market. The good thing with Adsense is that, unlike many other top Ad servers, it not only serves Ads in top sites but even in a site with very little traffic. So, everyone can make some money.
Adsense also have largest pay to click ratio in the market and advertisements served by Adsense can generate revenue on either a per-click or per-impression basis. I have seen I receive more than $5 for each 1000 Ads impression.
Don't expect each of the visitor of your website/blog will click on your Ad. I saw about 5% of my visitors click on Ads in my websites. You can of course try different tricks to maximize your income through Adsense. The Ads should be placed as close as possible from the main content of the page. Also, you will have more clicks if appearance of the Ad section is nicely integrated with the rest of the page.
You have to remember that Google is very strict against unethical practices and if you try to adhere with one of them then chance is good that Google will detect it through its automatic algorithm and your account will be disabled and your earned money will be at hold. Your visitors should not mix with actual content of the site and Ads in it. Also self clicking on the Ads in your website/blog is strictly prohibited.
The best way to get good return is simple, try to offer rich content for your visitors - so that you can get more visitors in your site and in turn more money through Adsense. You can also try to place Adsense Ads in different location of the site to find which combination suits best with your content.