Ok guys I have been reading this forum a lot lately and have learned plenty of new things about seo, keyword research, etc. So now I have my money site ready already ranking on page 2 of google for a keyword with 2.9k exact searches without any off page SEO. Now I have four 2.0 web blogs ready pointing to my money site which I recently created with a lot of hard work. So my question is, what do I do for tier 2 and tier 3 or is it ok to leave those blogs without any backlinks.. I have seen people talking about softwares like scrapebox, bookmark demon, gsa, etc.. so please let me know which is easiest tool to create t2,t3 backlinks.. and what exactly do these tools do..