Use External (Outbound) Links
External links to related pages helps Google figure out your pages topic. It also shows Google that your page is a hub of quality info.
And this isnt just a theory. The folks at Reboot Online ran an experiment to see if external links helped improve rankings.
They created 10 new websites. Half of the websites linked out to authority sites (like Oxford University). The other half had no external links.
And the websites with external links outranked the sites without them.
