| Type
| Definition/Description
| Example
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| Open Virtual World (OVR)
| Multi-user environment - users represented by avatars. Tools provided to build and script. No pre-designed purpose
| Second Life virtual world
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| Restricted Virtual World (RVR)
| Multi-user environment - users represented by avatars. Has pre-designed purposes (levels/goals/missions)
| World of Warcraft
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| User Upload Sites
| Users create and share videos, pictures and resouces
| OU Knowledge Network, Youtube, Flickr, Wikipedia
|
| Blog
| Individuals' Thoughts, Opinions, Diary
| Blog, Bliki
|
| Microblog
| Frquently updated expressions of thoughts, activities and queries
| Twitter
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