Oh do not show off here, please. More than half of your merits were given by the same member Halab, it more smells like cheating rather than clear game.
Maybe I am wrong and I even hope for that, but I do not believe that it is possible to earn merits just by making jokes and answering questions. In this case everybody would take merits easily.
I think to earn merits you need to spend like minimum 15 mins to write a comment, to it would be long and maximum informative. Add to that I noticed that posts with pictures and graphics earn merits in the most of cases.
So we can send merits to the same user went we found a post/thread was made by him is really interesting? talking about merits should talk/discuss the topic he received the merits. If sending merits to the same user was a problem, then "merits source" gonna get a big problem.
Did you know, WO thread you can earn merits with jokes/memes and nobody cares about the circulation transaction merits there. Everyone can freely send his merits to which post he was like, and the joke still one of them. Same users or not as long they not abused merits by sending to his alt/buying merits from other people or his real friend its not a problem, but sending merits to non-valuable posts was very unfortunate/wasting the merits.
Long/short post it doesn't matter as long was valuable, contributive, helping/solved some other problem and relate to the topic itself.