Web 2.0 Example

One example of a Web 2.0 website: Youtube
www.youtube.com
 Why is it Web 2.0?
It allows many users to post their videos.  Other users see them, respond to them in comments, and post their own videos.
Users: over a billion
Social and Ethical Issues: Equality of Access (everyone has same access to videos), Privacy and Anonymity (people can anonymously post harmful content), Intellectual Property (use of upload/download to pirate movies and music)
Areas of Impact: All of them.  There may be videos on any topic pertaining to one or many different areas.  For example, a science demo like we watched in chemistry last year is Education, Science, and possibly Health ad Entertainment depending on the topic.