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Of course this doesn't mean just some spammy comments. We work manualy check all comments and remove the spammy one.
Seems like I read it somewhere but I can't remember, so I'm going to ask for your opinion. If we have a lot of comment on our blog, then Search engine will give more 'love' to our site.
Is it true? What do you think?
However, as you may know there are many other factors that play an important role, such as backlinks.
I am not sure if that will help you to rank higher. Ranking higher might be determined more by the quality of your blog posts.