Regarding Charm, it wasn't always clear to me why you shut it down. You mentioned it here: http://news.ycombinator.com/item?id=4814598 which received some positive and negative comments. I'd rather not start that debate again but it would be interesting to hear your thoughts on whether the development of Charm was the issue i.e. internal vs. outsourced.
Rob has recently detailed his story on the excellent (and fairly new) Product People Podcast (from mijustin): http://productpeople.tv/2013/01/16/ep09-rob-walling-part1/