What's so monumental about turning 40 that women need their own Facebook group? Turns out--pretty much everything. Nina Collins has created an "environment that's a little like Vegas...our special place to talk about what's really going on in our lives..." But why don't real life friends fill that need? Collins turned what she learned from the group--and her own experience with hitting 40--into a book "What Would Virginia Woolf Do?" Hear it all this week on Inflection Point with Lauren Schiller.