A four-year-old is a petri dish for word-of-mouth. My son returns home with caches of unattributed information culled from his wonderfully diverse ecosystem of neighborhood, school, after-school program, and family friends. Oddly, you learn to trust this community more than any source. The three schools we're applying to all understand that technology must always evolve more quickly than best practices, especially when children are involved. But given my faith in community, I have been noodling ideas on how to use technology to facilitate after-school community—privately and safely—for even younger kids and their parents