Did anybody else find the font distracting? The little connecting thing between "st" is too ostentatious, particularly when the site does not respect other typographical conventions, like the difference between n- and m- dashes. (See, for example, the parenthetical statement in the second sentence. It should use the m- rather than the n- dash usually reserved for hyphenated words.) Edit: On second viewing, the issue…
The css for the page enables ligatures however, and falls back to the browser's own serif; so you were probably seeing the ligatures from your own default font. I'm guessing Adobe Caslon Pro, because it's widely available and has a very distinct loop ligature for 'st'. http://myfonts.us/td-C4VrUX