I have had some problems with Zotero of late with the interaction with the new Firefox version. It just has not worked as well. However, my kids and I do use it (and the Word add on) when writing papers. You need to do a little more maneuvering with print based references which can be a pain, especially since vista has a similar feature for creating a reference database that can be integrated within the word document. I know last year they spoke about developing a web based depository (like delicious) but I haven’t seen it. This would be the best to use because then you could upload references using different computers and access the information from multiple computers.