Link: http://www.zotero.org/

Yes, I am an avid Firefox fan. I mean, who isn't? Many Firefox thingys (read add-ons) have made my life easier since I started using them. I couldn't function as a webdeveloper without them (well, maybe, but it would suck). Now I am becoming forever indebted (golly, that word has come up a lot today...) to ZOTERO.

I love Procite, I have used a lot of other tools, but this one really is changing a lot of workflow for me, because.....like you, I spend a hellofalot of time on the itnerweb.

So, I am endorsing this add-on. As if it needs my endorsement, but there it is.