You should bear in mind that the merit system is not regulated. And users can give as much merits as they wish to a post they deem worthy. Except it can be proven that there is a trade or boost of personal accounts, nothing can be done by the mods.

This is so as not to scare ither members from giving out merits, which does not in any way favour them. And it can lead to hoard of merits.
Also you should freely link the profile, other members might be able to scrutinize it.