There are many advantages of link building

[my_misyel]

Yes exactly, that is why most online businesses used this technique to drive traffic to their site.

[Triple_i]

1. Link building helps in getting quality traffic from relevant sites which increases sales.
2. The site also obtains wider search engine exposure.
3. It also helps the website get indexed by search engines.
4. Also when there will be high quality incoming links the site will also be seen as a valuable resource.
5. Link building helps in creating awarness, visibility and credibility of your site.

You're damn right, that is why a lot of SEO experts out there are doing the same stuffs. to promote their site and increase traffic.