Ergonis Software has released PopChar X 3.1 [1], adding automatic font detection for Apple's Pages 2.0 or later (see "PopChar X 3.0 Improves Usability [2]," 2006-07-03). Also new in Ergonis's utility for finding and inserting special characters and HTML symbols are a more sophisticated technique for choosing the best size for displaying fonts, detection of corrupted fonts, and faster reaction when the keyboard layout changes. PopChar X 3.1 also fixes a number of bugs [3]; it's definitely worthwhile. The free update is a 1.5 MB download; new copies cost $30.
[1]: http://www.macility.com/products/popcharx/
[2]: http://db.tidbits.com/article/8582
[3]: http://www.macility.com/products/popcharx/history.html