For Reddit user- 1. Join in nature, Beauty, weight loose and other common groups too 2. Dont paste only links. 3. Use Flickr url and other images site with proper information 4. Make short videos upload in other sites take a URL and post them. 5. Like and votes others too 6. You can give trophies to others which you like most in the conversation. 7. Update latest news of the world, local to get point and authority in site.
According to me through Reddit you can increase traffic to your website also can get a backlinks also you need to do participate on that platform through this way you will be able for create social Signals that will reach to search engine and your website will get promote.
It can be a great way to get more online visibility and general internet reputation, especially if you share valuable content that can help the community in some way. But, it's not desirable that you use it for direct advertising since you can't just place the links here as you could even get banned.