I think your qualification "as long as hyphenation is done right" is the key here. I don't know of a single web browser that lets the user turn hyphenation on a

I think your qualification "as long as hyphenation is done right" is the key here. I don't know of a single web browser that lets the user turn hyphenation on and off, and while CSS3 supports hyphenation, browser support is inconsistent. (Chrome is the most notable problem child here, oddly enough.) And you could go farther and say "as long as justification is done right." All browsers that I've seen do justification use a very simple algorithm compared to LaTeX, Quark, and InDesign, and bad justification -- which tends to leave huge gaps of white space between words -- is harder to read than ragged right. Personally, I think the best you can do reliably on the web right now is ragged right with CSS3 hyphenation enabled for elements that contain body text. But I wouldn't turn on full justification.