DAVOS, Switzerland — Twitter's co-founder and the head of Google on Friday addressed concerns about Internet censorship in China, speaking at the World Economic Forum meeting in Davos, Switzerland.

Google's chief told the meeting that censorship in China has to change but that the internet search giant wanted to stay in the Asian giant despite being the target of cyber attacks from inside China.

When asked about reports of China's attempts to block Twitter, the co-founder of the microblogging phenomenon, Evan Williams said he had been told about them but the company had no confirmation.

"That's what I've been told," he told AFP.

"I have heard reports on that," he added on the sidelines of the Davos forum, but said the company did not have direct confirmation.

Intuit Is First Marketer to Have Its Tweets Streamed Across AdSense Network (by Abbey Klaassen)

Twitter may still be tweaking its own business model, but Google has found a way to use the popular microblogging service to sell ads.

The search giant has started offering marketers ad units that stream their five most recent "tweets" across the Google AdSense network. The first marketer to use the ad units is Intuit, whose TurboTax brand is trying to boost its Twitter followers. Intuit used several of the measures available for any AdSense campaign to target the ads, which are running on sites such as Bebo, Facebook, Hi5, MySpace and Alltop.

"It's syndicating whatever the team that works on the TurboTax Twitter account [@turbotax] posts," said Seth Greenberg, director of marketing at Intuit. When a user clicks on an ad it takes them not to TurboTax.com but to twitter.com/turbotax.

Being king of a graphomaniac, the 140 characters allowed by Twitter to express my thoughts seemed at first very frustrating.

When you are used to write long articles without paying any attention to the lenght, starting with Twitter requires a radical change in your writing style.

Wanting to learn from the bests, I starting looking at authors who were famous for their laconic and straight-forward writing styles.

After investigating aphorisms, haikus and other short writing styles, I found a mind blowing concept in the Japanese Zen tradition: the Koan.

Koans are generally questions or statements that are not accessible to rational understanding, but are supposed to trigger enlightenment.

On Twitter, a typical koan would look like:

Zen_Rookie If I haven't anything in my mind, what shall I do?

Zen_Master Throw it out.

Zen_Rookie But if I haven't anything, how can I throw it out?