I just observed that I can send merit to my own post but I am afraid that is not right or I'll be punished by getting banned for doing it?
I do not see any yet from your merit send/receive list.. I guess you just clicked the +merit link from any of your comment and found that took you to merit sending page. Actually once you finally try sending merit to your own account en error will occur saying something like.... You can not send sMerits to yourself kind of thing.