Julian Treasure's blog starting out from his book Sound Business and also covering anything relating to the way sound affects human beings - and the way business can harness the power of sound for better results.
Thanks to @stephenfry for introducing me to pownum via Twitter. This is a great initiative - I will start rating places on their soundscapes. I hope many more will do so too. Check it out at http://www.pownum.com/what-is-pownum/ .