Xulfiqar, you are correct; moderators are biased. They are biased towards impartiality, neutrality and above all transparency. They have to make sure that members comply with the rules and regulations that governs all members of this site, including moderators.
One of those rules states that commercial selling of goods and services is not allowed on this website unless you obtain prior permission from administrators of this website.
If you see other threads that look like commercial selling, please report them. Moderators will check to see if the particular person has obtained prior permission to engage in commercial sale. If not, that thread will be closed; no exceptions.