I agree with RocketSilo & Jingles.
I don't see a place for the "thumbs down" button here. Not even sure I would want to see a "like" or similar button. I would much rather see someone respond to a given post with advice, comments, even constructive/supportive criticisms when applicable. I’m not sure what value I would get from a set voting buttons as a modeller and contributor to this forum community, but I know exactly the value of the comments I received to date. I may not like something that is posted, and if I don't, I can always post a (respectful) reply as to why...
Just my two cents.