The most common reason I have use Trove for in my work is when I have an uncommon resource to catalogue that My aide can find on SCIS or any of our other references for cataloging.
The width of open content on this site is fantastic. Even though catalogue records are protected under copyright, one can obtain an indication of an appropriate Dewey number, subjects and new subjects that are evolving. Trove is my first point of contact for adding metadata to our school library catalogue.
I haven’t used the other tools like the newspapers, but I now know about them and will share this information with others. There are also so many more opportunities to contribute. Talk about a collective knowledge network.