Performancing For Firefox

I have been looking for a good, simple blogging tool for a long while now. Blogger's editor is fine, but sometimes it's a pain to have to go login to the site in order to add in something. I'm currenty working with a Firefox extension called Performancing For Firefox, and it might just be what I have been looking for. It's got a nice, simple looking interface, and I guess we'll see how it looks one I post to this page. I have used similar tools in the past, and they have always left something or another to be desired. If this works... well, I'll be happy.