In the web we keep on listening the word 2.0, accessibility, SEO, well thats what its all about. The evolution of Web 2.0 was slow but very affective. Now In web design the font which was hardly ever emphasized in the 90′s, is now used with some thought process.
Whether to use Serif (Font the one with little feet) or the Sans-Serif (font with no feet), it all depends on the feel of the site or mixing both fonts to achieve the required affect.
According to Wikipedia
“In typography, serifs are non-structural details on the ends of some of the strokes that make up letters and symbols. A font that has serifs is called a serif font (or seriffed font). A font without serifs is called sans-serif, from the French sans, meaning “without”. Some typography sources refer to sans serif typefaces as “grotesque” (in German “grotesk”) or “Gothic,” and serif types as “Roman.” These terms are no longer commonly used however, except in specific font names.”
Here are some really nice examples of powerful use of fonts in Web design today.