Hmm....I'd say about, erm...none. Although I have never been keen on SEO. Don't worry if you are not recieving that many hits a day. You should have seen mine at the beginning, recieving one if lucky. However, slowly your articles gain backlinks and popularity and as you amount hubs you will recieve more and more, for example most of my articles recieve around 5 a day. Anyway, I guess what I'm saying here is don't give up yet because it does all add up, even if you aren't a SEO pro. Hope this helps!