What is Poll Everywhere?(The fastest way to create stylish real-time experiences for events using mobile devices)
Poll Everywhere replaces expensive proprietary audience response hardware with standard web technology. It's the easiest way to gather live responses in any venue: conferences, presentations, classrooms, radio, tv, print — anywhere. It can help you to raise money by letting people pledge via text messaging. And because it works internationally with texting, web, or Twitter, its simplicity and flexibility are earning rave reviews.
2. Social Network
facebook, twitter, linkedin
3. http://www.sxc.hu 这里有非常的图片资源,而且很多是免费的。
4. http://www.surveymonkey.com 调查工具,运用比较广泛。
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