So far I only did high quality linkbuilding which worked pretty good for me, but as you know it also takes some time. I have a few websites which I have since about 9 month (they will expire in 3 months) and they are also ranked somewhere in page 3 or 4. I only did little bit backlinking to them, because I had not so much time. Now I want to try Churn n Burn on them so that they can bring me at least some $$$. My questions: I have a few websites on my hosting, if one of them get penalized will it hurt my other websites? I have all my websites on one google webmastertools account. Same question as above. Will it hurt other websites if one of them gets a penalty by google? If I make a subdomain on a penalized domain, will google treat it as completely new domain without penalty?