This week we study two other well known social networking sites: Flickr and Twitter. These tools have different purposes. Flickr is an image and video hosting site from Yahoo, frequently used to include images in a blog. Picasa from Google is another image hosting site. See a comparison of Flickr and Picasa here. See Hay chapter 8 for a detailed description of the media communities of which Flickr is a member.
Twitter is another story -- it dominates the landscape of microblogging. Again I don't have much to add to what is covered in Hay chapter 6. Please also see the use of the twitter search engine -- http://search.twitter.com . For those relying in Twitter in a day to day job I suggest the Joel Commm, Twitter power 2.0 book for further reading.
The detailed instructions for project step 5 tells you how to create Flickr and Twitter accounts and do a first tweet about you WordPress blog. Link them to your WordPress blog.