Do you like to read? Are you slightly OCD? Yes? Then boy do I have a site for you...LibraryThing!
LibraryThing lets you create a library type catalog of your books. There is the ubiquitous tagging, connecting with other users through the many, many groups and recommendations. Recommendations are based on several different criteria so you can pick the one that works for you. The service even includes a blog widget which you will see I have started using if you look to the right ----->
I am thinking of starting a separate account for Zoë. The kids' lists are not nearly as expansive as the adult lists, but it might be fun anyway and it might help drive expansion in that area. I am always looking for new kids' books for Zoë and to give as gifts.