I hit on a hot potato yesterday when I mentioned backlinks and in particular Guest Posts.
A few of you have asked me what exactly is a guest post so in short I have done this video that explains what a guest post is.
In essence its a link on real site with real traffic. Getting them is a whole different ball game.
That is called out reach and thats why its more cost and time effective to buy them (use someone else who has a great track record of sourcing these) rather than do the outreach yourself.
email me at firstname.lastname@example.org for info on the underground outreach experst I use for my guest posting