Can someone tell by experience or comment about if having more internal links benefits your site or not?
Scenario: my index pr 5 page has 10 links to internal pages all theme related. Thus my internal pages receive some of that pr.
If I add some 90 internal pages and therefore I grow in internal links amount and my index have now 100 links to internal pages, won't my internal pages receive less pr than before? (pr5/100 is less than pr5/10)
Is that a destructive technique or is it good because it means your website is growing in pages amount?
I see big sites ranking ok so I don't know what to think.
Having good navigation in the form of well-thought-out internal links can help you retain traffic. That way if they're not interested in the first of your pages you see, or are done reading it, they're more likely to visit more of your site.
I think that would help your positioning as these visitors would be more likely to link more of your pages. This has been my experience - everything I've done to improve my navigation has benefited me.
But I can't comment either way on how internal links would affect your site directly.