Have you searched: improve website traffic for free? Please note that I can’t tell you if you will increase the traffic that you are already receiving with what I am going to talk about. Nonetheless, I can say that it is possible to use blog commenting to drive visitors to a website at no cost. I have been using it for some time. However, while my results where limited, please continue to read this post for a small number of recommendation (the list is not exhaustive):

• Be among the first people to leave a comment
• write a relevant comment
• Even if Facebook is the only way to post, post your comment and place a visible link to your site on the Facebook account linked to the comment
• Subscribe to the RSS feeds of several blogs
• Make several comments a day