...or rather thunk!
I was poking around a few sites the other day and noticed that FireFox ignores most of the font symbols site owners used... it seems "Dings" are ignored which is a bit of a concern as it's not like they are the latest and greatest form of rocket science.
WingDings have been around since 1990 (wikipedia.org ~ Wingdings), they even have a little urban myth attached to them "Microsoft's Wingdings font includes hidden anti-Semitic and 9/11-referential messages." but WebDings didn't follow until 1997 (wikipedia.org ~ Webdings), now being a bit of a Dinger myself it does cause some concern as the popularity of FireFox grows as we have a character map presentation table of both WingDings and WebDings and as per the FireFox norm, both fail to display as intended. If you're confused as to what I'm prattling on about spring open your browser....