Link building remains an important Off page SEO exercise and two things matter since 2005:
- Dofollow (regular links)
- Nofollow
While these are all required to balance up a backlink profile, Google has come up with two more link attributes:
- Sponsored
- UGC (User Generated Content)
One of the things you must never forget is that change is constant and Google will always introduce something new to turn the way you do your business.