I have been waiting for this software for an age it seems – actually… only since about last October! Previously Zotero has integrated into Firefox, however, with a plethora of other (and often) quicker browsers this has always annoyed me (but not that much as it is free!). Anyway, I may be going wholesale Chrome in a couple of months now that this new version of Zotero is out which runs standalone: http://www.zotero.org/support/standalone. Initial tests seem that this is again a very nippy bit of software. I maintain a public list on Zotero with geodemographic references – this can be found here.