It appears to me that this add on has significantly slowed the browser (Quantum). It seemed pretty fast then I installed this for my wife (she likes to be able to add items from other websites to her amazon list). Ever since it seems pages are very slow to load. Anyone else notice this? Would love to hear back from developers. EDIT: When I click the button the window opens and loads for me (several reviews said it was not loading). MY problem is that it seems to have slowed the browser due to its permissions to view ALL my browsing I guess.