Private version of del.icio.us?

Is there a web based program to help you manage your private bookmarks?  What del.icio.us can do would be perfect, but I'm too shy to put my links out there for all there world to see.  Is there a private equivalent?  (See I post questions, but unlike Dave, nobody reads my blog, so I won't get 40 answers in 10 minutes like he does.)