Getting Rid of the WordPress.com Toolbar on Other Sites?

I recently started a WordPress blog, and now I get an ajax-loaded toolbar showing up at the top of tonnes of pages. It’s all links to my WordPress accounts and blogs and stuff. It’s fine that it shows up when I’m on WordPress or working with my blog, but I see it now on all sites that (I’m presuming) are built on WordPress.com). i.e. failblog.org.

Is there any way to turn off this toolbar?

Add the following code to your user stylesheet:

#wpcombar
{
    height:         2px     !important;
    overflow:       hidden  !important;
}
#wpcombar:hover,
#wpcombar:focus
{
    height:         28px    !important;
}

This will shrink down the toolbar to a 2px line. You may use display:none to remove it completely, but then it will not be accessible when you need it.