Rick Jelliffe, whose main hangout is I think here although Google finds a different āhome pageā, writes to point out this excellent comparative study of a bunch of different online typefaces, both serif and sans-serif. The study is too nuanced and deep to soundbite (cough Times bad cough) and if you care about this stuff at all, you should check it out. Now we need to figure out how to incent the researchers to cover a few more fonts.