Mindy McAdams gave a lecture on typography in her Advanced Online Media class.

The highlights:

• text is expressive

• choose text for legibility and readability — you must both entice readers and make it easy for them to continue reading.

• using all caps, italics, or small text reduces readability

• coordinate text size with line length – smaller text for short lines of text, larger text for longer lines

• use CSS to control line and letter spacing

• be careful with the fonts you specify in your CSS. Choose fonts that can be viewed on all computers and don’t specify different font-families for one piece of text.

McAdams also recommended this chapter from the Web Style Guide as a typography resource.