It seems to me that people tend to comment more about whether they like the subject matter than the technical expertise. I have a Poser graphics site that has all levels of artists as members, as well as a lot of non-artists. The images that get all the twitter are not the technically good ones... they are the ones that pander to the interests of the visitors. I can put up something that I've made sure is at least minimally complete and it never gets a nod, while a shadowless, plain-background, picture lit with the default lights gets 20 comments because the character looks like Barbie.

Most commenters don't know enough about what you're doing to even have a judgement! It's like me and shaders... I have a terrible time using them, and therefore don't feel qualified to comment on those who do. (I don't care for a lot of the effects obtained this way, but don't feel like I know enough to ever discuss it!)

My $.02