You asked a really important question, because it concerns many who are trying to develop their activity in social networks. For example, I also faced the fact that the content seemed normal, but few people paid attention to it. And you know what I realized? In social networks, you are always competing with millions of other people, and even if your content is really cool, without at least a little “help” you can get lost in the flow. Now about likes and services like SMM-World. I also tried to buy likes on twitter at the beginning. In my case, it was not exactly a solution to all the problems, but it still helped a little at the start. When you are just starting to gain an audience, buying likes can give a kind of “initial push”. It seems to create the first wave of activity on your account, and people begin to pay more attention to your posts.