Have seem lots of differing opinions on the number of tiers to build to money sites. How many tiers do you generally find to be best, taking into account opportunity cost of time/effort spent on link building projects Of course the best approach depends somewhat on the website/project in question, so asking about general opinions. Past a certain number of tiers, do you find that results are too diminished to be worth it? Personally, I have done minimal experimentation with anything past tier 3. Searched past threads and there seem to be few threads on BHW discussing anything more than that. Interested to hear about experiences building links for tiers 4, 5, 6, and beyond.