I'd say that depends on why you are posting - about colors, binding, pattern, just to get some encouragement, proud of yourself for completing a project or learning a technique, a pat on the back and and lots of "likes" is very nice
But if you have shown an example with a stitch, FMQ, or technical problem not related to choice - seeing posts of "beautiful quilt" "nice job or colors" isn't exactly helpful when you want to know if it's the machine or you. A post of empathy might go over better. Been there, done that, a link to a post with the same problem for a newcomer or a good discussion of the problem would be far more on the spot.
I'd say read the post first and see which category the post is in.