A visual history of Google Algorithm changes

The good folks at Hubspot have teamed up with Moz to design this graphic to visually elucidate why SEO is such a maddening task.

The bottom line on SEO? Forget the tricks and schemes. Forget the junk directories, link farms, and content mills. Cover the basics. Provide quality content. Provide a good user experience.

infographic google algorithm changes keyword seo