From the Weekly Standard:

...in the third century b.c., Aristophanes of Byzantium, head of the Library of Alexandria, devised the first system of punctuation in order to make reading easier. He created a series of three dots, or distinctiones, to indicate places within a text at which a reader should pause and how long that pause should last. These marks were the komma (·), the kolon (.), and the periodos (·), indicating a short pause, medium pause, and long pause, respectively.

Usefully brief introduction to the subject.

black tribute

In honor of the Apple Worldwide Developers Conference (WWDC), join Apple fans all over the world and wear a black turtleneck one day this week (June 11-15) as a tribute to Steve Jobs. Steve Jobs was a creative genius and inspired countless people. Lets come together this week and pay tribute to him by wearing black turtlenecks (if you don't have one, you can at least wear a long-sleeved black t-shirt).

via Steve Jobs Tribute Challenge.