Yes, but it only supported by IEWin. The fonts need to be converted to .eot format using microsoft's free (but cumbersome) tool WEFT. If the font is protected, Weft won't convert it.
It's totally standard compliant and doesn't affect other browsers. The downside, as I see it, is that if you have configured IE to warn before downloading webfonts, it will do so for each and every page. It would be better if you OKed the domain and then IE remembered that. As it is now, too few can use it and it's too much hassle IMO.
http://www.w3.org/TR/REC-CSS2/fonts....t-descriptions
http://www.microsoft.com/typography/web/embedding/weft/
Just for information, there was another method supported by Netscape 4. So many older sites with information about "embedded fonts" will refer to two different methods. Since that method died with NS 4, it's nothing to bother with.
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