1. Google Analytics remarketing allows users to create custom remarketing lists based on over 200 user dimensions and metrics to target specific audiences.
2. The document provides instructions on setting up remarketing lists in Google Analytics, including selecting a profile, choosing a remarketing list type, naming the list, adding filters, and setting the cookie duration and linked AdWords account.
3. It notes that privacy policy updates are required before using remarketing to disclose how user data and third-party cookies are used for advertising.