If you use Wordpress, there are several plugins available to help monetize your blog. Lorelle’s Wordpress blog lays out many good plugins in categories like adsense, Amazon affiliates, Paypal donations..etc.

A few of the plugins I am familiar with. I don’t use that many plugins and seldom search for any. Articles like Lorelle’s really help me to see some of the ways to make money with my blog that I knew about but wasn’t sure how to incorporate with Wordpress.