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Because you are using tags which I observe. Nothing special in your posts.

Then why my post is not getting any upvotes on which you have just commented? I am trying so hard in my post. Rest all are earning so much, I am not criticizing anyone but does my posts do not worthy of any upvotes?

Man, don't blame me on that. Maybe the real reason is that you're using upvoting bots and you have unnatural followers and after all nobody will upvote that kind of posts. My comments explaining acronyms have nothing to do with that.