Dear Friends, I checked my website for opensiteexplorer it showing Total Linking Root Domains 13 but some site's Showing Total Linking Root Domains 65 What is this and how to improve it
This means you have 13 domains linking to your site. This is domains, not pages. You can improve this by getting other domains to link to your site or by performing link building. In other words if you comment on a blog to get a link, only do this once on a site as Google does not really give much credit for additional comments on the same blog.