We've previously blogged about the idea of "sousveillance" - the idea citizens can keep an eye on those with greater power in society, using what are now everyday tools such as video cameras, mobile phones, blogs, and, well, sites like Patient Opinion.

But it's always been a little bit theoretical. Not such a big deal.

But now, here comes an example of sousveillance where it really matters - and all done with texting.

Let's hope it works.