I wholeheartedly support this - and if you support free markets you should support it too. Markets are free when information asymmetry is reduced, and currently

I wholeheartedly support this - and if you support free markets you should support it too. Markets are free when information asymmetry is reduced, and currently there exists one. The whole idea of free market of labour is that you will sell your labour to someone whose compensation you think is the best. Having more information obviously will increase your idea of how the market actually is, and allow a more informed decision - a freer market.