a quick google reveals sIFR (or Scalable Inman Flash Replacement) is a technology that allows you to replace text elements on screen with Flash equivalents Read more at the wiki here: http://wiki.novemberborn.net/sifr/
You can use SIFR in websites to display text in non web safe fonts. It is often used for page titles but not the main paragraph text. It uses flash so use it in moderation as it will slow page speed.