Feedback on Amplitude versus offset (AVO) analysis

Excellent information, if you are already and expert! This page provides a lot of detail about "How", but it doesn't explain the "What" and "Why". So, in 2 or 3 sentences, written for a non-specialist, "what" is AVO and "why" should I use it?...Excellent information, if you are already and expert! This page provides a lot of detail about "How", but it doesn't explain the "What" and "Why". So, in 2 or 3 sentences, written for a non-specialist, "what" is AVO and "why" should I use it? What is the purpose of AVO? What could it actually tell me? What exploration or production questions could it answer? What is the point of AVO?More