You can make really good money from your blog if you work in the right direction, I would say there is no doubt to it really.

Yes, Blogger can make money from their blog through Affiliate Programs.
First, they have to generate high traffic on their blog then post Affiliate banners on Blog free space to get money from them.

Otherwise if you are a good blogger just create a guest post site and start posting pure content. Allow guest authors to post in your site with fresh content. If your website will famous, Google will automatically give ads in your site and you can earn.

Yes, you can earn money from blog.Your blog must have unique content.You first need to generate traffic for your blog.After that google will automatically give add for your blog and you will start earning.

If you are very web savvy, or if you can learn to become very web savvy, then you have an excellent shot of making enough money from your blog to cover all your living expenses... and then some.  But if becoming truly web savvy is more than your gray matter can handle, then I'll offer this advice:  Don't quit your day job.

The next most popular way to make money with your blog (it's even the most popular for some sites) is with PPC advertising. The most popular way to run PPC ads is through Google Adsense. With Adsense, you're able to pop some code into your website and let Google pick out the proper ads that match up to the content on your pages.