Does what it says it does, at a price I'm already paying! (Guarding our civil liberties.)
I don't understand the whiners at all. They seem to have reviewed it without actually triyng it. I sorted and analyzed 1294 bookmarks, and it behaved exactly as expected. There is a means for defeating on a per-bookmark basis that works well. The nay-sayer's arguments can be summed up as: "What if I don't want my bookmarks sorted?" THEN DON'T USE IT!
If they'd read the documentation, they'd know what dup removal does, which it does quite well. In particular, it let me remove several bookmark dups where I had renamed one, which I never would have caught manually without actually reviewing the URLs.
My only (very minor) quibble -- the author is hard to get hold of. No where in the product or the website linked to the product is an email or feedback form that I could find! I wanted to let him know how much I liked his product, but I had to come here to get the contact email address.