I've found Zotero particularly useful as a sharing source for literary information. I am currently using it with a group to share resource information on an instructional presentation. It's been helpful to see the information others have sourced regarding our topic that I've missed. We are having some technical difficulty however. For some reason it has been a problem to make the group library accessible to everyone in the group for editing. Currently, only the creator of the group has editing rights. If anyone knows how to fix this problem, I'd greatly appreciate the knowledge. Zotero is different than other social bookmarking in that it allows you to post the article in full format with annotation and bibliographic information. This is particularly useful for LIS students and professionals. I downloaded the Google Chrome plug-in as well as the Firefox as I don't usually work in Firefox. So far, everything has gone well while working in Chrome with this app.
I see Zotero's applications in LIS as more relevant than other applications in the same neighborhood since the ability to annotate scholarly resources is crucial and time-saving.