[monkeynotes]

Before you decide to go, I'd evaluate exactly what you want out of the engagement and keep that in mind during the whole process. It's so easy to get used in this sort of scenario. Facebook obviously has an agenda of some kind and so should you. If those two agendas don't mesh then you should probably disengage or else be open to a one-sided benefit in their favour.

Be aware that their PR guys could use your name to dilute your previous critical commentary once you have gotten involved and are part of their 'consulted expert' club. This could potentially leave you fighting their PR which will likely just end up with a muddy mess.

Be prepared is what I'd say, a reputation is on the line for you and not much for them.