Hey, I'm new to SEO and would like to set up a tiered web 2.0 network. I would like your inputs on the network structure that I'm planning to build and would appreciate any advice. I'm planning to create about 15 open source platform sites in a 3 tier network with the first tier having 2 sites linking to the money site. The 2nd tier having 3 sites linking to the one site in the first tier and 2 to the other. The third tier having around 9 sites linking to the tier 2 sites. I would like your inputs regarding: 1. Should I build these sites on different open source platforms for them to look natural? 2. Should I spin my main article on the money site and use them in my network? (I'll be editing them abit so they look natural) 3. Do I have to link sites in the respective tiers to each other and other websites to make it look more natural and include links to other website out of my network? 4. How often should I link tier 1 sites to my main site ( 1 per article etc.)?