A. Yes - here are the main options (2012).
- Firefox bookmark checker add-on (only for versions below 16)
- AM-Deadlink for Firefox IE, Opera and Chrome
- SafariBookmarkChecker
Phil Bradley in CILIP Update, November 2012
I was always making notes on scraps of paper about tips and facts I'd read in books and magazines, seen on the Internet or on TV. So this is my paperless filing system for all those bits of information I want to access easily. (Please note: I live in the UK, so any financial or legal information relates only to the UK.)