Social Networking - Focus is on connecting with others - friends, people with similar interests, potential employers/employees and building a solid reputation. Sites like MySpace, Facebook and Linkedin are well-known examples
Social Bookmarking - Sites like del.icio.us & Magnolia allow you to organize your frequented sites, tag them for keywords and keep them in one place that can be accessed from anywhere. These bookmarks can then be shared with others.
Social Recommendation - Sites like Digg and StumbleUpon that combine social networking and social bookmarking to create user generated recommendation sites. These sites encourage users to submit content that is then voted on.
Social Content - Sites like Flikr and YouTube where users create and manage content from information to photos to video and more.
A methodical strategy designed to effectively harness user interactivity is key to the establishment of an online community
Without keeping SEO in mind the end product could end up profoundly diluting the value of the site
Providing a platform for user generated content allows you to exponentially increase the actual page count of your site
Blogs, forums, wikis and other Web 2.0 functionality not only allows consumers to actually create content for you but gives them a way to establish a relationship with you which builds confidence and trust
1 out of 3 internet users seeks out user-generated content to help them make their decisions
The majority of online shoppers read online reviews and blogs around products and services before they buy them