In other words, it can download and use (properly licensed) designer-chosen fonts on demand, without installing those fonts or needing them installed. I am waiting for the ‘real’ Opera to support webfonts before I redesign The Crud Factory.
Some test pages for webfonts: http://www.princexml.com/howcome/2008/w
If you use the latest Safari then you already have webfonts support. I assume that Firefox and Seamonkey will support webfonts eventually, due to user demand.
All current Crud Factory fonts are okay to use as webfonts. :)
PS: Internet Exploder has long had (or used to have) webfonts support, but in a Microsofty way that guaranteed no one would use the support. Perhaps billg thought it was cool, though.