Greasemonkey script "all comments"
I am a copy paste coder, this works on my machine(xp with FF3.5) and my account, you however are on your own. If your computer explodes and the internet breaks after you install this, I'm very sorry.
When you download this file you will get a .tmp file. Rename it to whatever.user.js, the only important part is that it end in user.js. Next, right click on whatever.user.js and choose open with firefox, you can then install it in the browser.
Update--Works in Chrome. Follow the same renaming steps as above, then simply drag it into an open chrome browser window. Chrome will give you the generic warning, just click "continue" to install.