The talk gives an introduction to CouchDB by showing the implementing of a simple Wiki Rails application that I have imp
"think in documents & views not in records and associations"
Based on the work of Apache CouchDB, PouchDB provides a simple API in which to store and retrieve JSON objects, due to the similiar API, and CouchDB’s HTTP API it is possible to sync data that is stored in your local PouchDB to an online CouchDB as well as syncing data from CouchDB down to PouchDB (you can even sync between 2 PouchDB databases).
Not being required to develop a schema before you build your application is a huge time saver. It enables quick prototyping and lets you mold the structure of your document as you delve into its different uses within your application.