In decades of interviewing and hiring developers I have not seen an actual difference coming from posting salary ranges. I tried many different versions of this. As a candidate, I do not apply to a thousand different places. I find 3-4 where I would want to work and I do my research before I even apply. I know what they can pay me before I get to talk to them. As an interviewer I try to stay away from candidates that…
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And also at least partly because I mostly work with polite people who will not point out my language mistakes. And I never attended any classes to have a chance for a teacher to weed it out.
As to your comment about sloppiness/ignorance, you might be ignorant thinking that because you care it means everybody else also has to.