Not exactly "cards", but there was an effort made on a previous topic to create a list of ideas: http://news.ycombinator.com/item?id=1755561 http://news.ycombin

Not exactly "cards", but there was an effort made on a previous topic to create a list of ideas: http://news.ycombinator.com/item?id=1755561 http://news.ycombinator.com/item?id=1755561