Its also something I've been meaning to try for a while, your post prompted me to try!

Starter was, erm, started on Sunday. Have been feeding it 100g of flour and water per day and most days removing half. This morning there were a few tiny bubbles (if you looked hard) and a later of hooch.

I poured half away and Refed this morning. Tonight its full of bubbles and climbing skyward towards the top of the jar, I've just had to put it inside a bowl in case it makes a real bid for freedom!

Pretty amazing stuff really.

Adrian