The future of punctuation?

The whole system is changing – evolving, perhaps:

Use of the semicolon is dwindling. Although colons were common as early as the 14th century, the semicolon was rare in English books before the 17th century. It has always been regarded as a useful hybrid—a separator that's also a connector—but it's a trinket beloved of people who want to show that they went to the right school.

More surprising is the eclipse of the hyphen. Traditionally, it has been used to link two halves of a compound noun and has suggested that a new coinage is on probation. But now the noun is split (fig leaf, hobby horse) or rendered without a hyphen (crybaby, bumblebee). It may be that the hyphen's last outpost will be in emoticons, where it plays a leading role.

(Image, perhaps best described as a repository of abandoned punctuation, via the Wall Street Journal)