Earlier quoted context omitted.
Ok, but what the hell does that have to do with building the site. Inbound links are obvious. Wow, really, is that all? And there are entire communities devoted to this? Seriously, I really want to know what I'm missing because I feel like I must be whiffing pretty hard here not to see it.
Backlinks are everything. Nowadays, I think you have to try pretty hard to produce markup that Googlebot can't interpret. I rocketed my forum community to the top of Google by generating backlinks. Some people consider it grunt labor, but I found it a lot of fun, especially if you get a program that keeps track of your rankings. It's addictive. And this is forum software that is rife with duplicate content, has URLs…
I get the point about duplicate content, that's something I had heard but not really delved into because, well, decent architecture usually means not having that sort of stuff around.
The more I hear SEO "experts" go on about things, the more I think it's a bit of a scam. Scam is probably the wrong word, as I'm sure many SEO people are well meaning, but the more I look the more it all seems like snake oil.