I think reading sales letters will give you the latest marketing strategies, and new developments. Some times you will get new product creation ideas, or a product imporving which will make a few more sales.
I always read offer letters and keep some interesting ones. Once I made an article from the idea I got from one of these emails.

It is right to make money online. Most newbies jump from one project to other after trying for a small period. You just need to have some continuous hard working to succeed online.

To carry on blogging for long term, it is required to blog about somthing you are passionate about. Otherwise need to put a lot of effort to focus on it. Thanks for this nice post.