Now that Firefox 1.0 has shipped and a significant number of extensions have been updated for 1.0, it seemed like a good time to ask you all again which extensions you use, if any, and why.
I only use a few these days. First, I'm a happy Bug Me Not user. I actually registered at most of the sites I use Bug Me Not, but at some point I forgot my passwords or even which email account I used to register. Bug Me Not saves me the trouble of trying to keep that stuff straight for all those sites where a login seems pointless anyway.
The second extension I find myself using is Link Visitor which allows me to mark links on a page as visited or not visited. I mostly use this to keep my blog in order (details of that are probably unimportant).
I occasionally use the Translator and Linky extensions but those are becoming pretty rare for me.
So tell me about your extensions :-)