The less weighty and permanent and stickily complex a social networking experience, the less it feels like it's the province of marketers, too.

CNN: Yahoo wants Tumblr's teens

Many euro countries will find that high unemployment, stickily inflexible markets in goods and labour, and the absence of cross-border fiscal transfers combine to make living with the single currency's discipline uncomfortable at best.

ECONOMIST: Yves-Thibault de Silguy, euro-navigator

The cardboard box from which the Jayalalitha-lookalike was doling out soft drink cans, dripped stickily onto my notebooks and elicited a quick apology -- repeated in the same vein when informing me that no, there were no bottles of potable water in lieu of the fizzy stuff.

CNN: From Our Correspondent: On a Magical Hill