As Chitika is in the news right now, I thought it would be worth linking to Darren's post on how to earn money from blogging.
 
While advertising gets some of the most attention, and I think it can be a relatively easy way to earn money, there are other ways and it never hurts to diversify.
 
Personally, and professionally, I recommend trying all the methods below (Darren has great explanations of all of them in his post).
 
Continues on Qumana Investors (blog link, syndication feed)