Please sign up for this list, this is the core group meetup. Just tell the mod (who is Will) that you are from LW.
There is also a public meetup planned this week: http://www.meetup.com/Less-Wrong-Overcoming-Bias-NYC/events/16332288/, you can meet the same people there.
What list do you mean? (The link was dead, not sure if it that's where the list was supposed to be or not)
Related to the recurring topic of akrasia and anticipated near-mode losses, here's an article about "Gym-Pact," an arrangement whereby people precommit to pay penalty fees if they don't stick to their planned workout schedules.
In other words, they aren't charging customers money in exchange for a service, nor for violating an agreement associated with a service... rather, they are charging money as a service.
Had I encountered this in fiction, I would have considered it satire.
(I'm being somewhat glib here, admittedly: in this "experimental" phase, they are giving people free gym memberships as part of the deal, and using the penalty fees to pay for the memberships. But that doesn't sound like the ultimate business model.)