People blog for various reasons like sharing their experiences, keep a log of their activities like a journal; get feed back from people in the same industry, get attention, to get back links to web sites, brand awareness, to be an authority, to make money and for many other reasons.
People in network marketing and MLM start a blog as their central hub and a place to invite their prospects to get to know them better.
Even if you started your blog as a place to invite your prospects to it will be an added advantage if you can earn some money from the visitors who visit your blog.
There are 3 reasons why you need to monetize your blog:

1. Offset your expenses.
   Advertising will cost you time and money and your goal should be to make your lead generation efforts profitable.
   Until recently MLM and network marketing consultants were of the opinion that their only income source is from their primary MLM business.
   If you think logically and with the statistics available it is a fact that only 2-3% of the people will ever be interested in your business opportunity.
   So if you are only depend on your primary business to provide cash flow, it will be a struggle for you to stay in business.
   
2. Value.
   - Your goal here is to increase the value of your internet real estate.
   The better you can drive traffic to your blog, more valuable it will become
3. Protection - MLM Network marketing industry is very volatile, companies come and go, up lines move to other companies taking their team with them.
   It is imperative that you look for multiple sources of income from the beginning.
   It is a well known saying in economics "do not put all your eggs in one basket" - you just have to follow this principle.
   

OK, let us have a look at the ways of making money from your MLM network marketing blog:

1. Your MLM business opportunity - Your blog is not the place to advertise your business opportunity.
   This is effectively done at the back end or after you have converted your blog visitors to leads, because at this stage you have warmed them up to know you.
   
2. Sell affiliate products - become an affiliate for products relating to your niche.
   You can advertise them on your blog as well as selling them at the back end.
   If you are in MLM or network marketing niche Magnetic sponsoring by Mike Dillard and The Renegade Network Marketer by Ann Sieg are good affiliate products to promote to your readers.
   
3. Selling advertising space to other advertisers - You will need to have a good readership to do this.
   Easiest advertising you can have on your blog from the get go is Google AdSense.
   
4. Sell your own products - this is a good option because you have the total control over your sales and marketing.
   The products can be physical or digital.
   
5. Sell your coaching / consulting services - this could be a bit challenging, but certainly could be done.
   

The bottom line is if you are in MLM or network marketing business, having a blog is instrumental to your success in the online world.
While your primary objective with your blog is to get prospects to subscribe to your email list, making money from your blog will certainly help you with your cash flow.