We're using Bootstrap 2.0 icons as the "leader" characters that tell you what you'll find when you click the link. It works fairly well, but we're missing some very important symbols.
Here's an outline with examples.
Some are great, the camera for a photo is perfect. And recycle icon for redirects. A bookmark for a link type is pretty good.
But the icon for a feed is terrible. It should be the standard graphic for a feed.
And we're using GIFs for the wedges that indicate whether something is expanded or collapsed. It would be nice if there were Bootstrap icons for those.
Also If you look at the top of the page, you'll see a blue wedge that toggles the presence of the menu. I would love to see that be a flag, like the flags on mailboxes. Two icons, one up, and the other down. These symbols were used in early Mac desk accessories, and it felt great.