Typography: serif vs. sans-serif
In Typography: serif vs. sans-serif, Faruk Ateş talks about the pros and cons of serif and sans-serif typefaces on websites.
Like Faruk states, the answer isn’t black-and-white – it depends on a lot of things. A few years ago I came across an interesting research paper on the subject: Skärmläsning (PDF file in Swedish, with an abstract in English). After doing extensive testing the authors came to the conclusion that Georgia (a serif typeface) is more legible than Verdana (a sans-serif typeface).
It would be very interesting to know how the excellent anti-aliasing in today’s modern operating systems affect the legibility of serif vs. sans-serfi typefaces at various sizes. Even more interesting would be a comparison between the different anti-aliasing methods used in Windows and Mac OS X. Is one better than the other (as in does it make text more legible)?