My apologies for asking so many questions, but I'm a beginner in SEO. I've been browsing these forums and reading up on link-building schemes. There are a couple of things I need clarification on. 1. For Tier 1 sites, would it be best to use private proxies? I understand that Tier 1 sites link directly to your MAIN SITE, so it would probably be best to use a different IP address. 2. For Tier 1, can you use spun content using an article spinner? I understand that it's best not to spin articles for your MAIN SITE, because you always want the highest quality. However, you need high PR backlinks, so maybe you shouldn't spin articles here either. 3. Tier 2 sites are sites that link directly to your tier 1 site. These sites are important because they help give your Tier 1 sites higher PR. Are you allowed to spam Tier 1 backlinks in this tier or is it to risky? Your Tier 1 sites might get penalized for unnatural link building. 4. I understand that Tier 1s are Web 2.0 blog sites (BlogSpot, WordPress) and that Tier 2s are blog comments right? In that case what would be below blog comments? Is it necessary to have a Tier 3 or can I just spam links to my Tier 1 site. 5. How many Tier 1 sites are you supposed to have. I'm thinking of just starting with 1. I appreciate any responses.