I'm researching right now the best way to build out Tier 2, whether manual or automated..it looks like automated is the best way. I'm wondering though. As of right now does our high quality Tier 1's totally protect us? If I were to build too many links to my Tier 1's will Googles Algorithm notice and penalize me? If I were to start by building 3 web 2.0's, 3 Article Submissions, and 3 wiki's for Tier 1..how many Tier 2 links would be safe to point to point to those?