It's really a hard time to be a merit source since it will be your full responsibility because sustaining and giving inspiration to those newbie takes time. There's a lot of newbies here and I don't think those accounts can post quality threads unless they're good at composing statements or they're existing here long time ago.
As what others said, create a dedicated thread for merit and members can quote their best post that they think deserve a merit. Ideally, some posts that deserve to be merited is somehow needed to dig since spam posts flooded the threads.
A part of it was a good idea to let @tokenweed see those are deserving but It'll just attract merit abusers like for example;
I saw that this person(merit source) gives merits to newbie good posters, and I'll create a new one then abuse the system since I'm good at posting.