LibraryThing allows you create your own library catalogue. You can organise and tag your books by topic, essay or assignment.

LibraryThing is very easy to join. To register, just enter a user name and a password in the green box.

Simply enter some words from the title, the author or an ISBN. You don't have to type everything in. LibraryThing gets the rest of the bibliographical information from Amazon.com and over 252 libraries around the world, including the Library of Congress. Just click on the book to add it to your catalog. You can search your books, sort your books, edit book information, and apply "tags."

My del.ici.ous is a social bookmarking website that allows you to store and share bookmarks on the web, instead of inside your browser. As a result, you can access and add bookmarks from any computer.

On del.icio.us, you can use tags to organize and remember your bookmarks. Tags are one-word descriptors like keywords or subject headings that you can assign to your bookmarks. You can assign as many tags to a bookmark as you like and easily rename or delete them later. Also, one can set up a shared account to collaborate with classmates when doing group work.