Social Media is a great invention to get to some public. But people are overrating it heavily. Your posts are a drip in the ocean.  

SM is only respnsible for 5 - 15% of clients you will get. So ask yourself where does the other ~90% come from?

- Google search !!! (So focus on having great content, blog and SEO)
- Having a great product is the key. Then you only need to launch it and people will want it and will write about it by themselves.
- Events with speakers, plus media coverage.
- Brand recognition and reputation building. If you had one good App they will wait for the next release and talk/write about it.
- Possibilities to integrate it in other products or build around it to add features. People will want to be involved and join.

Think how Satoshi posted his invention and people started picking up on it by themselves. He never did any marketing. It just took a few years.
Most coins that came after needed to rely on marketing tactics to push it instead of natural growth. Some with success but many failed, for example in the
competition to create the next Bitcoin 2.0 that is anonymous and would not be tracable. (not the most important feature anyway)