I recently noticed something strange when visiting some sites using Safari and Firefox. In Safari, I get this diamond shape with a question mark and in Firefox, just the question mark. Please see the attached image. [Edited on 12-16-2005 by pran]
There are many reserved characters when creating HTML pages and in order to display these characters, they need to be "escaped" properly. Those wierd symbols you see just means that the text has some characters in it that weren't properly "escaped" therefore the browser couldn't interpret them correctly.
Or the webpage uses a different text encoding. Choose the text encoding manually from the View menu of Safari.