Many years ago as a budding scientist with tender hide I was terrified of peer review. When I retired 8+ years ago I viewed "good" peer review as critical to good science. I emphasized good reviews because they are rarer than ivory bill woodpeckers. Most workers declined altogether. Some would skim the material and offer platitudes. Others were ideologues who didn't know the difference between ideology and science. Once in a blue moon a respected scientist would do a first rate job. Oh happy day. Brutal honesty was welcomed if it was civil. Add humility and a good review could become an inspiration or even a turning point in a career. While most of my papers are long forgotten, I still possess some of the cherished criticisms.
As a Christian I hold to the following scripture, "If you refuse criticism you will end in poverty and disgrace; if you accept criticism you are on the road to fame." Accepting criticism does not mean you must agree with all of it, for much of it is worthless or even destructive. But, if the maker cannot sift the nuggets from the rocks, he shouldn't be in the custom knife business.
To illustrate the virtue of honest review and how it might enhance a career, let me cite a incident related to the recent best bowie thread. I had rated a certain maker's bowie high but slightly less than my favorite, Jason Knight, because his blade had a tad less appeal to me. This popular maker emailed ME, a nobody on this forum who is not even a wannabe collector because I don't want to be a collector (just an old backpack hunter out west who appreciates fine tools), eager to discover what that little something was. He was not just open to criticism, he was stalking it. No one will be surprised to learn that it was the precocious virtuoso, Nick Wheeler.
I agree with Steven that if a maker posts his work he is inviting criticism whether it is articulated or the silence of the dead thread. Not that forumites need to critique every posting, but if one is moved to say something then he should be free to do so. Just remember that one reveals more about himself in the act of criticizing than in almost any other venue. So if one wishes the life of a pariah, then ignoring decorum and benevolence in your critiques is the correct path.
Frankly, in my few months here I've seen little abuse. Puerile bickering, si, but I don't recall any insincere, mean spirited maker reviews and there have been plenty of good ones. The recent attack against a genre of makers and their pretty art bowies did not impugn individuals. The antagonists had a point and I found myself partially agreeing with them (not blade failure, but compromised ergonomics in some cases), but I will not take the bait hidden in polemic rants by Philistines seeking a cheap rush of adrenalin and power gained from rattling cages.
Vicious attacks are not the only problem plaguing unsolicited reviews; unmerited praise is just as bereft of value. Again, I'm reminded of a scripture: "Flattery is a form of hatred, and wounds terribly." Les's story about a kind review backfiring and angering a maker underscores this. Honesty and good intentions are the hallmarks of constructive criticism.
The only thing worst than unworthy love or hate reviews is no review at all, for it provides some of the grist that keeps this forum vibrant for makers and buyers alike. So from my soapbox I say keep the reviews rolling. Breeches in etiquette for the most part are effectively self-policed via crushing feedback. For the sociopaths, there are moderators with swords.
Ken