I think this totally dependant on person sending the merit.
What is Merit? Merit is a new system created in order to reward quality contributions to the forum. Now to rise through ranks you will also need to acquire Merit in addition to Activity.
How do I receive merit?You are awarded merit by people of the community if they find your post helpful or informative.For more information read this post:
https://bitcointalk.org/index.php?topic=2766177.0