Hey guys, First of all lets get some definitions out of the way: When I say "Private Blog Network" I refer to having multiple niche related blogs of your own which are hosted on different C Class IP addresses. You are therefore going to buy high PR, expired, and niche-related domains - and pay for hosting. When I say "Web 2.0's" I refer to websites such as Squidoo, where you have a large amounts of user-generated content for free. Your Web 2.0's however would specifically be related to the niche. Essentially both of these provide the same thing. Contextual backlinks. My first question is: Which of these two are better quality link sources if your intention is to link to a single website that you own in that specific niche? I think that the goal is for each of the blogs or Web 2.0's to gain some authority in the niche, so that when you link to your main website, it represents a strong backlink. My second question is: How can you increase the authority of either your blogs or your Web 2.0's? Social bookmarking? Directory submissions? I am not talking about any form of short-term blasting or that kind of stuff. It is more interseting to learn what are some valid long term strategies, don't you think? I did spend some time searching for this before posting these questions. I did not feel as though the questions were sufficiently answered so I decided to make my own post.