FIVE STARS!!! After trying what felt like a dozen other bookmark "managers", this is the FIRST that actually lets me COPY AND PASTE BOOKMARKS EN MASSE from one folder to another! (And with fewer permissions required compared to others!) However, it does not copy folders themselves. Folder structure must be manually created, and each folder's contents copied one folder at a time. (FEATURE REQUEST) Also, unlike the built-in manager (and honestly I didn't test this with other add-ons) IT CAN DELETE MULTIPLE BOOKMARKS AT ONCE!!!! This is great! These are such simple, obvious, everyday things that you wouldn't think you'd have to search for specifically, yet no other "manager" seems to allow me to do these things. THIS dev has it figured out and understands what the word "manager" means in this context! Five stars earned!