Input any page URL (including individual blog posts) to see what types of links it has — and from where. (audiencebloom.com)
Use Links: There are three types of links on web pages: internal links, external links, and back links. (orhp.com)
Few sites ever reach that potential, because they don't know what that potential is, or they spend too much time (and money) chasing the wrong types of links. (ericward.com)