Okay, so as promised, here is a little list of the extensions I use presently for Firefox.
Del.icio.us is a social bookmark manager. I find it particularly useful when I am researching a project for work, and want to gather all the links together, and be able to access them from several computers (in the course of my normal day, I use four different computers, so perhaps this is more useful to me than most people). This extension helps me post links very quickly, rather than having to cut and paste the url to a page on the del.icio.us site. Incidently, to see my current bookmarks, go to Flotsky’s del.icio.us bookmarks
FasterFox is designed to speed up Firefox even more (it is already pretty nifty compated to Internet Explorer), and uses a few tricks to prefetch links on the page you are on. Also has a handy little display on the status bar which shows how long the page has taken to load, and which can also be right-clicked to clear the cache (both of which come in handy for doing web development)
Guess what? This is an ftp client for Firefox. I like having several elements of functionality within firefox, so I don’t have to keep opening and closing different applications. I haven’t yet found a good IM client for firefox, but that would sit inside here wonderfully (however I have found a webpage that does, more on that soon). Ideally, I would have two programs open at work, Firefox and Eclipse. I’m actually getting pretty close to having that rigged up, I now do all my sql, html, perl, cgi, version control and a few other things in Eclipse, and can do quite a bit in Firefox. Like ftp.
Does exactly what it says on the tin. Saves loading time, lets you miss out on content you never needed. Wonderful.
And that will do for now. There are others, and I may well add to this entry over time.