Okay, so I tried ScribeFire. It’s a plug-in you get from FireFox and it sits in the little toolbar at the bottom of the browser once it’s installed.
Short story – I didn’t like it.
It’s a nice feature to have if you like to blog about other websites, since it stays open on your browser. Your screen will show your browser on the upper half, and ScribeFire on the lower half. (You can change that in the settings though). You can add all your blogs to it, so you can post to whichever one you want. You can get some Technorati information about the page you’re on if you click the "page tools" link. It will also log you in to your Del.icio.us account to see your bookmarks. It has some nice features, but you have to be online to use it.
But I like to blog offline. I didn’t find anything in ScribeFire that would encourage me to choose it over Windows LiveWriter. I could probably rave for a while on WLW, but this is about ScribeFire. And for me, it doesn’t really work well. It might for you though.
If you’re interested in other FireFox add-ons, you can go here to check out what they have.