Yves alerted me to an interesting thread over on the Typophile forums. Seems that Letterhead Fonts has instigated an unusual copy protection system for their fonts that's causing a bit of bother. Stephen Coles puts it succinctly as ever, "It is frustrating, indeed. But I fear Letterhead will see a decrease in sales, not the number of pirated fonts. The right anti-piracy method has not yet been developed, and until then, legitimate customers will suffer. It's best to continue to create and promote great type. Most of the pirates wouldn't buy the fonts anyway." Well said!