I noticed that user Parzival recently posted answers to several questiosn (here, here, here, and here). Each of their answers was the exact copy of a highly upvoted answer. The last link even had a user point out that Parzival might be copying previous answers. (Note: I'm just using Parzival as ...

Here have been a few puzzles lately with "mistakes" in them that on any other site, the right thing to do would be to edit and fix. Here on puzzling, not only does the author undo the help, in some cases there are angry comments objecting to the edits. A tfel tfel deer rebus hinges on unwiling ...