Webfonts are gracing our online reading experience everywhere. Many times I notice a font I enjoy a lot whether I would want to use it for web or print. This is a very fun tool that identifies the typeface, style, and size on the page rather than having to open the source.
Simply place it in your bookmarks bar and a crosshair will appear on your screen so that you can click on any words to identify it.
I hope you find this helpful.