Feature ideas derived from listing meetup.com headaches

### Meetup.com headaches:

- dozens of ppl join the meetup, tens show up, very few ppl use the interactive features
- - how to encourage interaction between members to increase motivation?
- most ppl I know only use the date and location features of meetup.com
- costs waaay too much for the utility
-- greed _isn't_ good, in this case