I think PR is only about inbound links - BUT I also think PR isn't only one factor for sorting the search engine results.
Though being an authority site is a bit better in most cases IMO, but being a good hub which links to many related sites is also great.
outbound links dilute the amount of PR you can pass to other pages of your site from that page, they dont lower the PR of the page they are on.
I'm not talking about what boost our ranking on SERPS only about PR as niche thing. I thought that only inbound links create PR, but I've read somewhere that outbound links can also influence on PR of the page where is the outgoing link located. Is this true ?
hmm, not too sure about this, always thought PR's the balance between your incoming and outgoing links. 'cos one of my personal site which i didn't optimise for seo has like 20 outbound links and only 3 incoming links and it has a PR1.
If you consider the PR gained by your homepage from all your internal links: - Increasing the number of links on your homepage to pages external to your site will reduce the amount of PR conferred by each link on your homepage - This means that the PR gained by the other pages on your site will be reduced - It follows that the PR given back to the homepage from these pages will also be reduced, thereby reducing the total PR of your homepage That's the theory anyway, but I doubt that increasing your outbound links would make any sigmnificant difference. I wouldn't even consider PR when thinking about which pages to link to, I'd just link to pages that would benefit my users. My advice is forget PR and just link.
No it's not true. Whether I link to one or one hundred pages, the PR of the linking page will not be reduced by the outbound links. The amount of PR passed will be affected by the number of links. Link away.