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means different things to different people, and its revered or loathed by different artists. But DA has given people a choice: they can

. Or they can comment. Or they can do both. Its all
optional.
So some people leave you a favourite and don't comment. This isnt because they're lazy or selfish. Perhaps in their opinion its already perfect. Perhaps they can see upteen other comments that all say what they're thinking. Perhaps they're out of time. Or perhaps they just like the image for some inexplicable reason.
People do not need to justify why they are faving something.
Sometimes Ill

and dash. But just to knock home the point,
I comment a lot more than I fav. Why? Because to me the fav is the icing on the cake. I use it when something just can't get any better. That's what a fav means to me.
Sure, many artists want some constructive criticism. I know I do. But demanding it wont get you anything of value. Dont whine when someone gives you a

without a comment.
Please refrain from flaming, bickering or squabbling with each other in comments. Sensible debate welcome.