Meaning of fonts
Fonts are not simply aesthetically different. Each font carries a set of meanings and associations with it, which can be used to reinforce the message of the page. For example, in general, sans-serif typefaces look modern. Serif typefaces look more old-fashioned or traditional. Fonts carry other connotations, however. For example, the Microsoft font "Comic Sans" gives an "amateur but friendly" impression. Next time you notice an interesting typeface, look at it and try to think of ways to describe the impression it gives: is it high-quality or cheap? casual or stylish? amateur or professional? rich or poor? conservative or anti-establishment? This might seem a little excessive, but all these and more are impressions and images that can be conveyed by a good - or poor - choice of fonts.