Some social media sites are set up for you to submit your own content. Some more niche sites however are set up for users who expect great shared and valuable content, so submitting your content on these types of sites may not be appropriate for you to do. People will notice that you are just trying to bring traffic to your site, which may or may not go over well if your content is subpar.
For more you can check : Short Video Pricing. Social Media FAQs