How safe are Web-safe Font Families really?

12. Web Safe Fonts Please

font-family: 'Lucida Sans Unicode', 'Lucida Grande', sans-serif;

Safari 4.0 , Windows 7

Safari 4.0 / Mac OS X 10.5

13. Web Safe Fonts Please

font-family: 'MS Sans Serif', Geneva, sans-serif;

Safari 4.0 , Windows 7

Safari 4.0 / Mac OS X 10.5

14. Web Safe Fonts Please

font-family: 'MS Serif', 'New York', sans-serif;

Safari 4.0 , Windows 7

Safari 4.0 / Mac OS X 10.5

15. Web Safe Fonts Please

font-family: 'Palatino Linotype', 'Book Antiqua', Palatino, serif;

Safari 4.0 , Windows 7

Safari 4.0 / Mac OS X 10.5

16. Web Safe Fonts Please

font-family: Symbol, sans-serif;

Safari 4.0 , Windows 7

Safari 4.0 / Mac OS X 10.5

17. Web Safe Fonts Please

font-family: Tahoma, Geneva, sans-serif;

Safari 4.0 , Windows 7

Safari 4.0 / Mac OS X 10.5

18. Web Safe Fonts Please

font-family: 'Times New Roman', Times, serif;

Safari 4.0 , Windows 7

Safari 4.0 / Mac OS X 10.5

19. Web Safe Fonts Please

font-family: 'Trebuchet MS', Helvetica, sans-serif;

Safari 4.0 , Windows 7

Safari 4.0 / Mac OS X 10.5

20. Web Safe Fonts Please

font-family: Verdana, Geneva, sans-serif;

Safari 4.0 , Windows 7

Safari 4.0 / Mac OS X 10.5

21. Web Safe Fonts Please

font-family: Webdings, sans-serif;

Safari 4.0 , Windows 7

Safari 4.0 / Mac OS X 10.5

22. Web Safe Fonts Please

font-family: Wingdings, 'Zapf Dingbats', sans-serif;

Safari 4.0 , Windows 7

Safari 4.0 / Mac OS X 10.5