Anyway, this slideshow has cool ingredients. I like the idea of object/artefacts in the center of the social networks, that's why I'm a big fan of social bookmarking, for example. I really don't care that much about connecting to people that I don't know (mySpace) or even using LinkedIn (what's the point, you get a list of people, but no substance..), but when I can connect through items and tags to people's stuff that I find interesting, I find it useful.
In the slideshow Sinha talks about models of 2nd generation networks (the 1st g was only about people):
- Model 1: Watercooler conversations
(around objects e.g., Flickr, Yahoo answers)
- Model 2: Viral sharing (passing on interesting stuff, e.g., YouTube videos)
- Model 3: Tag-based social sharing (linked by concepts. e.g., del.icio.us)
- Model 4: Social news creation (rating news stories, e.g., digg, Newsvine)
- Good answers need many perspectives, thus many perspectives are needed otherwise groups become too homogenous, which might have its dangers also (stupidity of mobs, see Digg for that ;). If all the new members are too similar and like-minded, they don't bring anything new to the group (that's why we want serendipity from recommenders!). Diversity reduces groupthink (think of Digg again and how fast not favourable stuff gets buried), groupthink is bad and only way to fight that is diversity.
Lastly, some design principles:
- Make system personally useful: For end-user system should have strong personal use; Self-expression (e.g., Newsvine);Social status: Digg
- Don’t count on altruism: System should thrive on people’s selfishness