...is by far the best form of advertising. I don't really care what companies tell me about their products. Everyone wants to think they're the best, so it's always sensible to find out the real truth from someone who has used a service or given product.
If I ever need a decent builder, plumber or hotel, I'll always value what other people tell me, particularly those I know and trust.
I was interested to find this article on the BBC site. Good old beeb, they always come up with the real gems.