These merits were given when the merit system was first implemented. Users with member rank and above received merits based on their rank.
Ah now i got it.Sadly my previous account was banned for no reason
It has some merit on it. and was OLD account since Jan 2015 https://bitcointalk.org/index.php?action=profile;u=409485
10 merits is nothing. You can easily earn that by simply posting and replying helpful information. Honestly, your content doesn't even need to be great. It just needs to be helpful enough. Also knowing that most members with higher ranks tend to be more generous to lower-ranks that are helpful.