I have a site that is roughly 2 years old, which is in the medical field. I have done some limited backlinking over this time, maybe 100 ezinearticles and over the last 3 months I have been adding about 1 piece of new content to the site. When I check my back links I am showing that i have started to receive some natural links to the site now and the traffic has been steadily increasing... Nothing super great, but slowly building. My question is, what value is there in linking to my backlinks I have already created vs just building more backlinkgs from other sites? I should note the backlinking I have done previously was over 18 months ago and I have not done any since then. Thoughts?