Born Joel Arthur Rosenthal, he affects to be known, in the manner of Prince or Christo, by a single name: JAR (no periods).

FORBES: The Cult Of JAR

From May 1 the widget will no longer require that its users pay money upfront into their accounts, or maintain payments to keep them going a bit like giving you a tip jar, with no requirement that you tip others.

FORBES: Flattr Goes Free To Revolutionize Online Payments

On the counter that serves as the kitchen there is no fresh food, only a jar of protein powder.

ECONOMIST: They came to America illegally, for the best of reasons

Investors no longer guess how many jellybeans are in the jar, but what other people's guesses might turn out to be.

ECONOMIST: The strange existence of market anomalies

The jar, a different one this time, contained no cockroach, and the hat held by Wardlaw was different as well.

CNN: Five guys take same photo for 30 years