For years, link building companies were never concerned about the quality of the page they were trying to get a link to. Instead of quality go link acquired, it was about quantity of backlinks, mainly acquired through an automated process.
Types of link building tactics that no longer work include generic directories and SEO directories. Article links, especially article blasts where you can push an article in and there’s no editorial review. Guest content, depending on the editorial practices. Press releases, Google you saw penalized links coming from press release websites.
Comment links, for obvious reasons, reciprocal link pages, those got penalized many years ago. Article spinners. Private link networks. You see private and network, or you see network, you should just generally run away. Private blog networks. Paid link networks. Fiverr or forum link buys.
In a recent Whiteboard Friday Rand Fishkin identifies three targeted link building tactics that he believes still work. They are: