One of the more interesting aspects of the new Shorter Oxford English Dictionary is that the editorial team, lead by Angus Stevenson, (not Jesse Sheidlower, as mistakenly reported by the American Spectator; Jesse is only doing publicity for the new edition) chose to remove the hyphens from many words. BBC has a fairly decent story about it, and gives these changes:
Became two unhyphenated words
Became one word
I should also add that if cost is not an object, the Shorter is the dictionary I recommend as a reliable dictionary for household, office, or school use. It does tend to skew a bit British, but with the latest edition, I gather that much more attention has been paid to making sure that North American terms, meanings, and pronunciations are included.
If you’re more price-conscious, I now recommend Webster’s New World College. This is a change over past recommendations.