Whip and Stir

Most of us if not all, want to earn from blogging. One could add a "Donate" button but he must sign up first for paypal. Other ways to earn is through pasting advertisements in your site. There are numerous advertising sites which are willing to give you a cut if you give them traffic.

Listed here are the sites which you might be interested to check out:
Google adsense
Kontera
Bidvertiser
AdBrite
Amazon