I never see links from internal pages linking back to the main page.
I see internal pages linking to other internal pages. I don't normally see people targeting their root domain with links from internal pages. Is this bad practice? It goes to reason if the main pages passes link juice to six secondary pages that it would be good practice to pass it back.
The navigation bar has "home" on it. Does that imply that every page on the site passes juice to "home" and every link on the navigation bar? Does that then mean that it's good practice to have a good number of links on the navigation bar to spread link juice from the entire site back to those specific links? So each link on the navigation bar should be a page I am trying to rank for a keyword.
My site has 10k pages indexed. Mostly real estate listings. The pages are all PR0 so likely pass nothing along to the navigation bar links...
A good practice would be to chose all the pages in my navigation bar and SEO each one. Get each internal page on the nav. bar to a good PR so it passes it's link juice to all the other pages on the navigation bar and back home. Right? The navigation bar should be links to all pages you want to rank highly for because you can (with above strategy) rank them well together by ensuring a good few internal links.
I do a lot of blogging. I get back links that way (duh). When I go on a blog and make a post, I should make a comment using my root domain. The next time I comment on the site use one of the internal pages on my nav bar, then another one. This way one site is feeding link juice to each of my internal pages which then feed my other internal pages/home. Right?
Main point: I won't get a huge return for getting 10 links from one site. Each will pass juice but it will devalue in volume; however, I can get 10 links from that domain to 10 different internal pages at no devalue then pass link juice from those internal pages at no loss. Right?