This is a place where you can find information for books, add book details - ratings, comments etc, organise and sort book collections, share information with others and more. I find it very useful and I am sure it would be for any library user.
Trove is a discovery experience focused on Australia and Australians. It supplements what search engines provide. If you are researching in the fields of the social sciences, literature, local or family history, or need inspiration for your school assignment, then this is the tool for you. It is the most amazing FREE site and I use it to find so many things "Australian".
I like Zotero which is a free online bibliographical management tool. haven't used it through Chrome yet but have used it in Firefox and got the add on for Word. It automatically cited information for you which was a real time saver for me when completing my Advanced Diploma studies. Read the article in Bright Ideas for more information.
I too have use Zotero for my uni studies and found it quite clever. Zotero works better when installed using Firefox (which I personally don't use). So, if you are looking for a program to keep your bibliography on track take a look at this program.