Although I mentioned several times in this list the importance of participating in discussion rather than just dropping your links, that doesn’t mean you should never promote yourself. I like to use the 80/20 rule in this case. At least 80% of the time, you should be using social networks to share other people’s links and participate in conversation. You can share your own stuff about 20% of the time.
While there are several platforms for doing this, clearly YouTube is the most popular for doing this. However, video marketing is also a great form of both content marketing and SEO on its own. It can help to provide visibility for several different ventures, and if the video is valuable enough in its message and content, it will be shared and liked by droves, pushing up the authority of that video through the roof.