A search for 'House rewiring' on a search engine like Google probably directs people to the Answerbank at the moment... because one or two questions have been asked, Google trawls through AB regularly and rates it highly (and quite right so!) so more strat to come. It happens periodically with odd questions!
Where I live I had a letter from the electrcity board about coming round to inspect my house wiring for free and to see if needs updating,maybe its a nationwide thing and some people are getting a idea how much it would cost.