Merit System is a unique feature of this forum which let's you to merit a post if you like the quality of the post or think that it is contributing towards the forum the same can be done By clicking on the top right of every post where there is a button : +Merit. The system is so constructed that when you send someone a merit almost 50% of that merit sent becomes sMerit i.e. sendable merit which means that person can now spend the 50% of received merits to merit other posters. Everyone has certain amount sMerits with a new account and you will get more of them when someone merits you. For more in depth knowledge regarding the merit system I recommend you going through these posts made by trusted forum members:

1. https://bitcointalk.org/index.php?topic=2818350.msg28856522#msg28856522 - Merit & Reank Requirement By Theymos
2. https://bitcointalk.org/index.php?topic=2766177.0   - Merit FAQ by hilariousandco

you can also find various other posts by people in this https://bitcointalk.org/index.php?board=24.0 Meta Section