So I am running some web 2.0s, articles, social bookmarks and comments onto web 2.0 props pointed to my site. Each one I usually do 3-4 spun articles @ 84% uniqueness per keyword. My blog comments are somewhat random, but the articles, bookmarks and certainly the 2.0s have my KW. I am using 2 sites. So I am wondering how many unique articles that are spun I would need? If I want to target 10 keywords, will I need close to 30-40 articles that are spun uniquely?