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A new site hopes the seemingly simple idea of eliminating the language barrier, letting you write in English and be read in Arabic — and vice versa — will cultivate citizen diplomacy between the Middle East and the West. It aims to reduce tensions at the grassroots level between two cultures that increasingly co-exist but seem a world apart.

People who don’t share a common language can have an online discussion in near real time. The name, appropriately, means “gathering place” or “town hall” in Arabic.

Think of it as a social network filled with people you don’t know, but want to understand.

Powell’s experiment, however, demonstrates the current limitations of Abilene Christian’s mobile learning study. Because the experiment took place on such a small scale, the margins of error were sometimes as high as 13 points, making it impossible to render statistically significant findings.

Although the university plans to saturate the 4,000-student campus with iPhones and iPod Touches by the fourth year of the study (giving them out to each incoming class), even then it will be difficult to extract good data, said Perkins, the lead researcher. “We could do this study for 10 years, and then maybe we could talk about statistical significance,” he said. “That’s just simply a function of the sample size.” In order to generate data that would comment widely on the uses and effectiveness of mobile technology on campuses, Perkins added, the study would have to partner with other institutions.

Since not all the students could necessarily afford AT&T service plans for their iPhones, and U.S. tax law would not permit the university to sU.Sidize service plans for its students, Abilene Christian offered students the alternative of an iPod Touch — a device that shares many of the iPhone’s functions, but requires a wireless network to support Web-surfing.

the tracking of consumers has grown both far more pervasive and far more intrusive than is realized by all but a handful of people in the vanguard of the industry. • The study found that the nation's 50 top websites on average installed 64 pieces of tracking technology onto the computers of visitors, usually with no warning. A dozen sites each installed more than a hundred. The nonprofit Wikipedia installed none.

the Journal found new tools that scan in real time what people are doing on a Web page, then instantly assess location, income, shopping interests and even medical conditions. Some tools surreptitiously re-spawn themselves even after users try to delete them. • These profiles of individuals, constantly refreshed, are bought and sold on stock-market-like exchanges that have sprung up in the past 18 months.

Advertisers once primarily bought ads on specific Web pages—a car ad on a car site. Now, advertisers are paying a premium to follow people around the Internet, wherever they go, with highly specific marketing messages.

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