I agree, Pittwitch. However, it is difficult to weed out those who wish real concrit from those who want ego strokes, or simply desire attention for all the wrong reasons. I see please read and review and I take those writers seriously. I review. I am not all love it vagueness oriented reviewer. I am a to the point and bunt reviewer if there is a very big writing problem, such as run on sentences. I tell the writer what strengths I see, the good points of plot, and other things also. Some stories have very little good to point out also, another problem I run into while reading. I have to refrain from reviewing the really bad fics, because at best I have an abrasive personality and know this well enough. ROFl.
When I write, it is to entertain any who choose to read the things I post. If I do a decent job, both the positive, and negative feedback equally feeds my muse. Both help me to expand as a writer, and revise so that my stories get better with each weakness discovered. I know that I get too close to my own writing, so the feedback with concrit allows me to see things that I miss even after 4 read thorough combs, and corrections done. Like Bronx elegantly put it, I make infantile mistakes in my own writing. It is a normal glitch for any writer to commit. I do edit for a couple of people, yet, I make the dumbest goofs in my own writing. I find most of them once I get through pounding the rough out, but not always.
I get very confused when I see people delete their reviews if anything less than glowing was mentioned. You simply can't improve the stories and the pleasure gained in the work process when that happens. As DemonGoddess said, it is the younger generation doing the review deletes as a matter of course. The same younger generation can not handle any form of input that is less than pedestal placement worthy of them I begin the think. Makes reviewing a real nuisance at times, but I will persevere because a few people do like real reviews.