In my Web 2.o for Dummies posts I discussed Web 2.0 usage by commercial companies. The companies use Blog s , Virtual Worlds , and Wikies. They use YouTube videos as well. An interesting idea of a mobile device application adding human memory in remembering -->people is presented by a YouTube video made by IBM. It is also a good example of Web 2.0 usage by --> example of Web 2.0 usage by companies.
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