Ask HN: What resources do you use to lookup salaries?

Anyone can create a "fake" account on glassdoor and record a salary for any given company. Linkedin Premium feature is as bad as glassdoor. Sometimes you see the salary mentioned in a job description so you can compare with linkedin's suggested salary. They're off by $40k sometimes!

So what do you use to get an "accurate" salary range for a given position/title at a given company?