How do I prevent fonts from looking ugly in the exported PDF ?
Scribus is picky about the quality of the fonts you use and will not list a font that doesn't pass an automatic quality check. Also, to prevent exported PDF files from becoming too big, a font with more than 2048 glyphs will be converted to outlines by default and can't be embedded. Outlined fonts can look quite ugly in PDF viewers, particularly in Acrobat Reader. You can avoid the issue by preventing the conversion to outlines: Simply use File > Preferences > Fonts, identify the font that's being converted to outlines and uncheck the box in the "Subset" column of the font tab.
The chapter Fonts in Depth provides further information about the problem.
--Markus 20:50, 23 October 2006 (CEST)