I came across this site, Gripe, at the weekend. The idea of the site is that you can have a gripe about something and then say what it would take to resolve your gripe. Ideally the brand is listening and they will then resolve it. At first I thought it was a bit negative perhaps, but then I saw that you can also have a cheer, so praise a brand for something good they did.
This is one of those sites that will take off if lots of people use it and brands respond. To be honest if I was a brand I would actively sign up to listen on this site.
What do you think? Here is how a gripe looks on your phone