Liz from the YouTube team created a thread at YouTube Help explaining that YouTube has pulled the Realtime toolbar feature. Here is Liz’s apology for removing it, on behalf of all of YouTube and Google:

If you forgot what the realtime toolbar did, you can still read about it at youtube.com/t/realtime_about, that is until that page is pulled. When the page is pulled, I have captured a screen shot of it and posted it on Flickr for all to see. But here is one piece of the toolbar:

It seems like not that many people were upset with the departure of the YouTube Realtime Toolbar.

Forum discussion at YouTube Help.