These are blogs that have some connection/relationship to conservation, preservation, libraries or other book-related things. If you know a blog that should be added to this list, please leave a comment!
Kevin Driedger’s Library Preservation Blog
if:book, part of the Institute for the Future of the Book
Antarctic Conservation Blog [And you think it's cold in the lab! At least we don't have to worry about our paste freezing.]
Museum Blogs – a collection of several different blogs that is also searchable.