A thoughtful critique can be useful. Someone might say "I like this but how about a different crop" or they might suggest more/less contrast. That's OK. It can be constructive. If they just say it stinks or you stink, then it isn't worth reading. If they say they like it, that is good because everyone likes and needs encouragement. Even better is if they say why they like it. I haven't critiqued anyone here. Maybe it is because of who they are. Who knows? Critiquing a Michael Smith, Jim Galli or Ed Buffaloe for instance would be uncomfortable for me. But there is at least a balance of sorts. Too many places I've seen only have negative critiques and no positive ones. It's all opinion.