Just a quick post to announce that Kurt Luther and his social computing crew at Georgia Tech have released Proveit, an amazing little open-source tool that allows you to find, edit, add, and cite references in Wikipedia articles! Proveit is designed specifically for Wikipedians, so all you need is a Wikipedia account. You install it once, and each time you log in – from any computer – there it is. Better than Zotero, from this point of view 
Plus, it works with virtually any browser, from Firefox to Chrome, from Safari to Opera. It is even said to work with Explorer – although admittedly this hardly is a plus.
Anyway, that’s how it looks on screen, and if you wanna try the live demo, click here. If you are an OSS developer, there’s a Google Code project at http://code.google.com/p/proveit-js. And if you just want to send Kurt Luther and his team a little feedback, notes of appreciation, or sheer flattery – they are all welcome at this email address.