Blogging - making it pay

First of all, you need to consider the number of readers you target with the blog articles, and set an average or modest click rate in case the domain you're dealing with is not a very common one. You may get valuable clicks, but they may not be enough to generate the income you need; therefore, always try to maintain a balance between the advertising rate you set for the blog and the amount of traffic you manage to draw by well-researched, informational content. The best Google program to use here is definitely Adsense, but keep in mind that the ads are relevant for the site material and vice versa, hence, focus on quality not quantity.