Went on a bit too long for my liking but had valuable information, especially for a social spastic like me. A fair few of her gathering examples are the type exclusively attended by rich people with waaaay too much time on their hands (Dinner en blanc can bugger off, thank you very much). However, some other examples were great in terms of us common folk who need to manage our Meetup groups, or plan a potentially tense business meeting, or break the ice in a conference. So I recommend it unreservedly, though perhaps go with the print edition, as it's easier to skip around to the relevant parts.