Here's a question that will expose my noobness - I have been reading up about silos and when page linking is referred to, does it mean linking via anchor text in the main body of the page or just via on page navigation menus? My site theme has a main navigation bar beneath the header logo and one in the footer. All my level 1 pages are linked to via these 2 menus on each page, i.e. each page is accessible from any page. If I am to build further levels, should I keep the lower level pages off the top menu and link level 3 to level 2, then level 2 to level 1, i.e. only one link on each lower level page? Confused.