I'll make it an option though, and I'll include the salary data that StackOverflow ads make available when they do. I definitely prefer seeing a salary range when I look for jobs.
>> I'd never ever create a website like this with hidden salaries. ...what if they do so, because they're offering 10, 20, 40% less because it's a place for "old geeks that noone wants"?
In my experience, the risk of wage exploitation decreases with age. Unfortunately, a lot of younger workers are paid lower than less skilled, but older workers simply because of lack of seniority and/or negotiating skills.
But, I must say such "what ifs" are silly in business. What if your anticipation of a nonexistent problem is the cause of your inaction?
I'm not being snarky so much as serious. I've been in a number of meetings where I had to cede to someone's "what if" when the alternative was a cheap and measurable test. Cheap and measurable tests are the primary thrust of my blog post.