Google, of course, keeps a great deal of secrecy regarding how much AdWords advertisers pay per each click directed to their site and the same applies for how much AdSense banner holders make from their websites.
Earn Money With Google Adsense |
There are also stories of people exceeding $100,000.00 per month but it's a bit hard to believe such stories. The truth to the matter is that if you have a small website and you just want it to support itself, and don't wish to reach your pocket for its maintenance costs you can probably do this with AdSense.
AdSense is also very good for people who host a lot of pages. Even if the said pages don't generate a lot of traffic individually, every click counts and you can earn up with a lot of money by doing this. And that just goes to prove that sometimes quantity matters nearly as much as quality.
There's no telling how much money you're going to make by using Google's AdSense but you can sort of tell for yourself, before actually starting, by taking a few things into consideration.
First, is the amount of visits you get every day. While there's no way to estimate precisely on this, you can generally make a safe assumption that if you have a lot of clicks per day you'll be making good money.
Also, this depends on what exactly your site is about. If your site is about anything popular (music, sex, whatever) you're bound to get a lot of banner clicks. These have a coefficient associated with them, called the CTR (click through ratio).
Basically, what it translates to is that if a large proportion of your site's visitors click the ads you'll be making more money. And the best way to do this is to have some popular content in your site, ensuring the links direct users towards popular items as well.