Google Analytics Frequency & Recency Report Question

Anyone out there who understands Google Analytics Frequency & Recency reports? I’m trying to figure out what ours means, and I’m just not getting some things about it; though I have read pages that purport to explain it, some things still don’t make sense. Please e-mail me at volokh at law.ucla.edu if you’d be willing to answer a question or two about it. Thanks!