Pinboard.in does this too. The site's founder, Maciej Cegłowsk has a nice post comparing Pinboard's archives to other sites': http://blog.pinboard.in/2010/11/bo

Pinboard.in does this too. The site's founder, Maciej Cegłowsk has a nice post comparing Pinboard's archives to other sites': http://blog.pinboard.in/2010/11/bookmark_archives_that_don_t/ http://blog.pinboard.in/2010/11/bookmark_archives_that_don_t.... (Note: May be out of date.)