[ragequittah]

I've been really confused as to what all the hubub is about. I think I saw the sidebar for about 4 seconds on each of my installs before I hid it forever. I tried to reenable it to see what people were complaining about but couldn't find it within 10 seconds so gave up.

[bayindirh]

AFAIK, you can't enable them without resetting things in about:config. So it's a "big red button", and that's a good thing.