Only accept persistent cookies that were a result of user action, otherwise demote them to session cookies.
Turn all persistent cookies into session cookies unless you recently interacted with that website. If you clicked or typed on the website, the website is given a 30 second window in which a certain number (default = 2) of persistent cookies are allowed through.
All persistent cookies that are allowed through are given a shortened lifespan (default = 1 week).
This extension is designed to behave smartly by only allowing persistent cookies that are "useful".