A fantastic add-on for everone who occasionally has to use many tabs for certain research work, but easily runs out of memory.
Two suggestions for the designer that would make a enormous improvement:
1. It'd be good to have an easily accessable switch in the button bar for quickly toggling between on and off. I now have to use the add-on menu to manually activate and deactivate this add-on pedending on the specific task. And I have to toggle more than 20 times a day!
2. Instead of having a white-list for pages where 'Discard' doesn't work, it would be good to have an option for entering a list of pages for which discard is active. As for me, it is mainly one address only for which I need an automatic discard.