A brand president at Cole Haan said, "We're horrified ... either Twitter is going to fix this, or we'll fix it by any means we can, which includes not buying Twitter ads." Impact On communication In May 2008, The Wall Street Journal wrote that social networking services such as Twitter "elicit mixed feelings in the technology-savvy people who have been their early adopters. Fans say they are a good way to keep in touch with busy friends. But some users are starting to feel too connected, as they grapple with check-in messages at odd hours, higher cellphone bills and the need to tell acquaintances to stop announcing what they're having for dinner." The following year, John C. Dvorak described Twitter as "the new CB radio". Emergency use A practical use for Twitter's real-time functionality is as an effective de facto emergency communication system for breaking news. It was neither intended nor designed for high-performance communication, but the idea that it could be used for emergency communication was not lost on the creators, who knew that the service could have wide-reaching effects early on when the company used it to communicate during earthquakes. Another practical use that is being studied is Twitter's ability to track epidemics and how they spread. Additionally Twitter serves as a real-time sensor for natural disasters such as bush fires and earthquakes. Education Twitter has been adopted as a communication and learning tool in educational and research settings mostly in colleges and universities.Grosseck & Holotescu (2008). "Can we use Twitter for educational activities?" Proceedings of the 4th International Scientific Conference: eLearning and Software forEducation, Bucharest, Romania. It has been used as a backchannel to promote student interactions, especially in large-lecture courses. Research has found that using Twitter in college courses helps students communicate with each other and faculty, promotes informal learning, allows shy students a forum for increased participation, increases student engagement, and improves overall course grades.Junco, R., Elavsky, C. M., Heiberger, G. (2012). "Putting Twitter to the test: assessing outcomes for student collaboration, engagement, and success". British Journal of Educational Technology. doi:10.1111/j.1467-8535.2012.01284.x Twitter has been an increasingly growing in the field of education, as an effective tool that can be used to encourage learning and idea, or knowledge sharing, in and outside the classroom. By using or creating hashtags, students and educators are able to communicate under specific categories of their choice, to enhance and promote