I have a website where I just had a service done that submitted an article to 400 or so article directories. I am now going to blast those sites using scrapebox. I loaded all 400 links into scrapebox, did a PR check and picked the top 100 sites with the highest PR that I am going to blast. I have a few different lists totaling about 3 million blogs I use on scrapebox. What would you recommend being a good number of backlinks to my web 2.0 sites? I ask because on my other site I did the same thing where I blasted those sites and actually had 2 of my articles outrank my main domain with only like 75-100 backlinks. Should I pay attention to this again or just blast the hell out of them and go from there?