Chapter 16 MARKETING AND SOCIAL MEDIA 219 Telepresence system for videoconferencing. The report cites an AT&T-funded study that reports that by 2020 videoconferencing can save a $1 billion in travel expenses and $19 billion in reduced CO 2 emissions. The report adds that AT&T has a vested interest in videoconferencing. According to an Associated Press report in June 2010, Twitter use in Japan had exceeded that in the United States, with 16.3 percent of Japanese Internet users who tweet, compared with Americans at 9.8 percent. A Japanese retail clothing chain, Uniqlo, uses Twitter to encourage sharing among their followers. This marketing technique aims to convert tweeters to shoppers by offering freebies. Tokyu Hands, a large department store in Japan, is another heavy user of social media. They use Twitter to respond to questions from their followers, and they encourage folks to retweet their posts. Their website offers several YouTube-embedded videos, including one that measures the weight of their featured folding umbrella against the weight of an iPhone. Wal-Mart is among a large number of retailers that use Twitter to post daily specials. Wal-Mart has six Twitter accounts.