I was wondering if there exists or should exist a standard glyph map for icon/symbol fonts. That way if you have a system/theme with thousands of sites running you could easily change styles of the glyphs by changing the font face.
For example if I wanted to switch from www.fontspring.com/fonts/drew-wilson/pictos to somerandomdude.com/work/iconic/
a '4' would still represent a right hand arrow.
I know there are various reasons for and against using symbol fonts. For my purposes this is a great solution and I have my own methods for dealing with screen readers etc.
There is a great article and follow up discussion about this using this method here: http://filamentgroup.com/lab/dingbat_webfonts_accessibility_issues/
and there is a possible standards compliant method here: http://www.codestyle.org/css/at-font-face/StandardUnicodeIconsWebFonts.shtml