A social network service focuses on building online communities of people who share interests and activities, or who are interested in exploring the interests and activities of others. Most social network services are web based and provide a variety of ways for users to interact, such as e-mail and instant messaging services. (Wikipedia)
web-based services that allow individuals to (1) construct a public or semi-public profile within a bounded system, (2) articulate a list of other users with whom they share a connection, and (3) view and traverse their list of connections and those made by others within the system. (Boyd & Ellison)
Phishing is an e-mail fraud method in which the perpetrator sends out legitimate-looking email in an attempt to gather personal and financial information from recipients. Typically, the messages appear to come from well known and trustworthy Web sites.
Concerns were raised as to how the amount of publically available information on social networks would make phishing easier
Phishing A study conducted in Indiana University found that students who were approached within a social network framework were nearly 5 times more likely to be successfully phished than students who weren't approached in that way
Mobile Social networking Most analysts now see Mobile networks being the big growth area for Social Networks. Update your profile where and when you want. New technology allows you to find where your friends are located
Need for data portability Because you can be members of a range of different social networking sites this can mean that you have a range of different logins. The wider social network can be lost because of your different identities.
Dataportability – lets you take data and friends from one SNS to another
Openid – single sign on: allow your identity to follow you around
It is possible that the rise of the semantic web will address these problems…but create more.