So I have joined Pintrest, after loads of people told me I'd love it, I'd spend hours on it, it's addictive, etc. I have an account, now what the feck do I do? Do you just look at stuff and like it? Is it the Internet equivalent of walking around a whole load of fancy shops or an expensive department store saying to yourself, ooh, that's lovely, I'd love one of those. Can someone point me in the right direction please?