How does it work:
As soon as you install the plugin, the plugin will find all relevant blogs in the network which are similar to your niche. So if you write about dogs then the plugin will find all blogs which talk about dogs. Once the plugin find the relevant blogs, it will mutually exchange links between the blogs. So if you have 300 posts in your blog then it will find 300 similar posts in the network, and in turn mutually links with those posts. So you will get around 300 backlinks right away. The more you write the more backlinks will be found by the plugin for your posts. This is a ongoing process and I can assure you that you will see gradual increase in traffic over time.
