Don’t buy links! That is the message from Google (although we are not sure if they are applying to that rule themselves) and is the message from your SEO as well if its correct. Still there is a lot going on ‘behind the scenes’. And therefore you need to be careful when doing linkbuilding.
But how? The people at Linkresearchtools made this infographic explaining the steps to find out if a link is coming from a link selling network or not. But tell us, What is your way of finding this out?