Permissions: Access your data for all websites
The extension can read the content of any web page you visit as well as data you enter into those web pages, such as usernames and passwords.

"5. Certain Third Party Transactions

add0n.com may disclose personal information to third parties to provide services that involve data processing on its behalf (e.g.: advertising"

quite excellent and it can save the shortage of the PC and make the browser faster, thumb up

Very useful, save a lot of RAM.

After evaluating this for a couple of days on a desktop and laptop (Ubuntu and Fedora), this works as expected. The settings are nicely configurable. Restore a discarded tab has so far worked very well.