to get a reward or an award from others you must make a useful post and useful to increase knowledge for others. but I think it is very difficult to get a merit from someone else.sometimes our post is good and useful but still we still have not get a merit is sometimes we think our own post has been weighted but not necessarily also according to others judge like that.
the reason for creating a merit is so that we can further improve the results of our post and not the origin of posts, let each other help each other to increase insight and share experiences.