Hello everyone...I don't know if the question I'm about to ask really make sense or not. I don't know if meriting a post without commenting on it is a sin here. Although I have not taken my time to research here but I think asking will be better for me since I have audience who can put me through.
If I merit a post without any comment can I be penalize for it?
Like all members before me have said before - no, you are not penalized for giving a merit to a thread that you don't participate. Think about the times that you are in an active discussion with your friends and in your mind you are thinking - "Yeah, I totally understand his point", "That for sure makes sense" - without actually participating in the discussion because you wouldn't have anything new to add but also believe that your view is well reflected on the opinion that your friend is expressing - Congratulations, that's (some) example of how the merit system actually works.
This, of course, can be extrapolated to threads that generate good value towards the community and that you find useful - if I would speak of my case I believe I merit more (when I can) than I participate in some discussions, and that is ok as well. Imagine if the merit sources would have to comment in every discussions that they give merit too - they would go mad in a matter of days (I could be exaggerating, just wanted to show different perspectives).