thats why me gets no merits till now even after good suggestive and usefull posts
If you are sure you are doing nice post and helping the forum, continue it. Soon you will be noticed but from your few lines, I suggest you put more effort.
The fact that the rest of us don't get any warning means there is no firm rule.
That is the reason that members who have smerit don't search for posts befitting for the merit. They wait for ways to trade it or let it locked in their account.