Build your own blog/ website network

In the offline world, if you are dealing with a large company which is both a seller and buyer of your products , and the company refuses to buy from you (while buying from everyone else), you will be disappointed. You will probably not buy any of the company’s products for the rest of your life and look at alternate options.
Similarly, if your Google Adsense account is disabled (without any apparent reason to you), you would not like to use Google Adwords and will look at alternate options for driving traffic to your main websites.
Having your own network of hundreds of websites/ blogs, is one way to get traffic at a low cost without depending on any external agencies.