How to be NOT-FOR-PROFIT.
Bloggers do earn a lot of money, from reviews and advertising mainly, provided that their blogs are popular.
I don't earn anything from this blog, seriously. Mainly because I don't accept requests for reviews and advertising. I don't want to feel obligated. I will only write reviews to things I seriously feel that they deserve it. Besides, I started this blog initially to share my cartoons, not to gain profits from it. The only advertisement I put is the Nuffnang's one on the sidebar and even that doesn't give me anything much. (Still saving up to get my own domain!)
So thanks to my philosophy, my blog will remain very poor. =(
I hope that answers your questions.
Oh yes, I do read all the comments left in chat box or each of the post! So feel free to ask me anything!