This slideshow outlines the main ideas from our first sessions on blogging, and also discusses the application of Metcalfe's Law with regards to PLNs and David Warlick's concept of students' "invisible tentacles".

1. Web 2.0 – the read/write web

3. “ The community value of a network grows as the square of the number of its users increase. ” Metcalfe’s Law

4. Practical Web 2.0? Blogging What is the sound of one hand clapping?

5. What good is one fax machine?

6. “ Usefulness” = Collaborators 2

7. … however…

8. Can’t quantify “usefulness”

9. Limits

10. Overload?

11. time

12. Noise?

13. Heuristic value

15. Keeping an eye on the time: http://flickr.com/photos/badboy69/2333409688/ Heavy load: http://flickr.com/photos/ccdoh1/406700106/ Hands clapping: http://flickr.com/photos/kevflanagan/364568552/ Noisy crowd: http://flickr.com/photos/wili/1015520862/ Tentacles: http://flickr.com/photos/dontworry/332667811/

16. To enter a link in a comment: <a target=“_blank” href=“http://www.google.com” > Google </a> target=“_blank” means that the link will open in a new window href=“URL” indicates which web page you want to link to Inside the tag, you put the text you want to display for the link.