Thanks. Just one comment about security: it is NOT guaranteed. I can only do what Firefox allows me to, but ultimately if Firefox decides that when an extension tells it to delete bookmarks that it should keep a bit of info about them somewhere internally, there is nothing I can do about it. This extension is like a door lock - to a determined burglar it is just an inconvenience, but to the 99% of burglars too lazy to go through the trouble it does the job. Just wanted to emphasize this point. Thanks for your review.