Web 2.0 is two-way communication on the Internet. Its predecessor, Web 1.0, only allows one-way communication. In other words, in Web 1.0, a company can post its catalogue online but it must also include its contact information, as consumers cannot give feedback, comments or orders to the company via the corporate website. With Web 2.0, Internet users can reply to hosts, thus allowing the creation of many two-way communication applications, including: social networking, chat, instant messaging, blogs, e-commerce...
Without Web 2.0, our lives will not be as connected and as convenient as today.
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