CSS3 enables you to embed fonts directly into your CSS stylesheets. This neat feature is pretty useful espacially for tiny icon fonts that are small in terms of filesize and consist only of a few chars. This can improve the loading speed of your page due to less HTTP requests required. But keep in mind that mostly only recent browsers are able to handle CSS embeded and base64 encoded fonts.
(Supported files: TTF, OTF and SVG)