I feel old-fashioned. I still use a piece of paper and a pen to jot down ideas. Not a fancy Moleskine book either, just one or two Sheets of A4 folded twice. I

I feel old-fashioned. I still use a piece of paper and a pen to jot down ideas. Not a fancy Moleskine book either, just one or two Sheets of A4 folded twice. I feel productive. What do you think is the secret for Workflowy's success? Is it the novelty? The geekiness? The design? Stuff like that fascinates me, because I don't really need it. How am I to discover what people like if I wouldn't use it in the first place?