Salary ranges are great, and I think it indeed can save time for some job seekers (as well as employers) but on a side note, regardless of posting salary ranges

Salary ranges are great, and I think it indeed can save time for some job seekers (as well as employers) but on a side note, regardless of posting salary ranges, sometimes you want to hire people who do not only look for a better pay. Sometimes you can't pay better, and sometimes you know you can only pay worse (e.g. a seed stage startup) and all you can offer is - interesting problems to solve, culture, upside, vision, working with other crazy people who took a pay cut to try and move the needle and make a bigger impact.