Blog Monetization

PayPal - PayPal allows you to set up a donations system on your site. Your readers can click a button that will bring them to a page where they can send you some cash.
Chitika - Contextual interactive CPC advertising. Requires more screen real estate than AdSense, but tends to have higher click-through rates and payout rates.
LinkAdage - Text links and text advertisements to generate revenue from your website by way of bidding, brokering, and exchanging text advertisements.
Txtswap - If you want to exchange text links to try and bring in more users, and in turn raise the potential to gain income, this is another service to try.
Google AdSense - Almost certainly the largest single source of income to bloggers worldwide. Pay per click and per view.
Yahoo Publisher network - pay per click ads, similar to Google AdSense.
AdBrite - Get paid for text link advertisements on your blog.
Text Link Ads - One of the leading suppliers of text link advertisements.
BidVertiser - an advertising system where you set the bids for pay per click ads.
ReviewMe - a marketplace for paid blog reviews.
PayPerPost - another marketplace for paid blog posts; often criticized, not only because of the idea of paid blog posting, but also due to the fact that they don’t require full disclosure on paid posts.
BlogBurst - get your blog syndicated by the bigtime media; best blogs get paid for their content.