I have around 40.000 bookmarks that I try to keep organized (as resources for my blogs, future ideas, etc...). I have an hard time keeping track of what's not good anymore.
Is your extension a good fit for such a large collection of bookmarks ?
(Plus, I'm on firefox, so +1 for a firefox extension)
To be honest I haven't tested it on anywhere near that quantity of bookmarks, so I'm not entirely sure how well it'd perform.
My suggestion would be to either wait for the extension to mature a little bit before testing it, or to export your bookmarks first so you have a backup. The extension itself is non-destructive in that it won't delete your bookmarks, but there may well be undiscovered bugs that could mess up your current organization of bookmarks, etc.
Is your extension a good fit for such a large collection of bookmarks ?
(Plus, I'm on firefox, so +1 for a firefox extension)