tnx for replies! I read that link building can help to improve rankings and website traffic ...
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So it looks like you already know the answer to your question? What's the point of opening this topic if you already have a solution?
Or were you just looking for a cheap way to promote your service?
This is wrong way of promotion of a self website. Even though people think they will promote in this way, the fact is that all such efforts are waste of time.
A better way is to open a proper thread telling the details about the site/service. That could bring traffic or customers.