No, I haven't been but I recommend you to read this great post from food blogger Helen Graves whose blog Food Stories is also vastly entertaining.
It's all about how intimidated she feels by the wine industry (don't we all?) but in fact it contains one of the best, simple descriptions of natural wine I've come across.
And some glorious photos, one of which I'm going to ask permission to nick to make this post look slightly less boring.
And I will be posting soon. Promise.