To me, salary is not everything in our line of work, so making that piece of information public would not provide much benefit. I value what I get to work on, how I get treated, the hours I work, etc. more than salary. Comparing my salary to that of someone in another department within my company, or to someone who does a job similar to mine at another company, would reveal almost nothing. Looking at salary alone would lead to confusion, and the intangibles are almost impossible to quantify.