Social Network Analysi Social Network Analysis: Introduction and Resources What is Social Network Analysis? Network Data Collection and Representation Network Theories Analysis of Network Data Software Applications Books and Journals Article References Selected Online SNA Portals Ulrike Gretzel November, 2001 What is Social Network Analysis? Social network analysis is based on an assumption of the importance of relationships among interacting units. Actors and their actions are viewed as interdependent rather than independent, autonomous units Relational ties (linkages) between actors are channels for transfer or "flow" of resources (either material or nonmaterial) Network models focusing on individuals view the network structural environment as providing opportunities for or constraints on individual action Network models conceptualize structure (social, economic, political, and so forth) as lasting patterns of relations among actors Wasserman, S. and K. Scott, J., 1992, Social Network Analysis. Index Network Theories
Vaivaton.com - Verkkokauppakeskus Google Lively In July we launched Lively in Google Labs because we wanted users to be able to interact with their friends and express themselves online in new ways. Google has always been supportive of this kind of experimentation because we believe it's the best way to create groundbreaking products that make a difference to people's lives. But we've also always accepted that when you take these kinds of risks not every bet is going to pay off. That's why, despite all the virtual high fives and creative rooms everyone has enjoyed in the last four and a half months, we've decided to shut Lively down at the end of the year. We'd encourage all Lively users to capture your hard work by taking videos and screenshots of your rooms. Zaadz: Connect. Grow. Inspire. Empower.
knowledge.wharton.upenn.edu/article.cfm Less than three years after emerging from nowhere, the hot social networking website MySpace is on pace to be worth a whopping $15 billion in just three more years. Or is it? Is the much smaller Facebook, run by a 22-year-old, really worth the $900 million or more Yahoo is reported to have offered for it? “What makes this hard is that these companies seem to be so many years away from the kind of earnings that the valuation numbers are forecasting for them,” says Andrew Metrick, finance professor at Wharton. While the social networking sites vary considerably, each relies heavily on content provided by users who can post personal profiles and build networks among friends and others with shared interests. The problem, as Wharton accounting professor Robert W. Valuing advertising-driven sites is particularly hard because the same numbers — such as the number of users or page views — can mean different things depending on how the advertisers are billed, Holthausen adds.
The Social Networking Faceoff Written by Alex Iskold and edited by Richard MacManus. With all this buzz around the potential Yahoo! acqusition of Facebook for $1Billion, we think it's time to do the social networking faceoff. Arguably of all services in the new social era, the social network sites hold most promise. Another natural trend that we are seeing in the space is demographic segmentation. In addition to those three, Bebo is making some major waves and has surpassed MySpace in UK and New Zealand. The Social Network Faceoff Chart (*) The active user estimate is based on the assumption that MySpace has 70M users. Traffic Dynamics We can gain additional insights by looking at the traffic dynamics over the past year. Orkut is rising? From the charts we clearly see that Orkut is gaining, but why? But perhaps it is not just that Brazilian users dominate, but also the attitude and confidence of Orkut. Conclusion MySpace is an undisputed leader on all counts, but Orkut is on the rise and it's moving very rapidly.
i-wisdom: Social media versus User Generated Content SundayApril 2 Tom Coates has a great post on his blog Plasticbag.org on what social media is all about. His reflection starts from the observation that the term "social media" is the new buzzword that arose from the ashes of three others: ... the term seems to be being used as a badge for pretty much anything that someone wants to talk about and make sound contemporary. Online community as a term has disappeared, social software seems out of vogue (is media the natural progression) and social networks are quite 2004, but social media as a term is everywhere. He first puts it in a historical context. The age of social media then is probably about a fusing of these two ways of thinking - the communicative and the publishing/creative parts of the internet - into something new and powerful. In what follows, he gives a brilliant insight into the essential features of social media. 1. social medias network user generated content. 2. Links: What do we do with 'social media'?
danah boyd Friendly Favors DAYLO - Local skills, services, trades, and talents. Network effect - Wikipedia, the free encyc Diagram showing the network effect in a few simple phone networks. The lines represent potential calls between phones. The classic example is the telephone. The expression "network effect" is applied most commonly to positive network externalities as in the case of the telephone. Over time, positive network effects can create a bandwagon effect as the network becomes more valuable and more people join, in a positive feedback loop. Origins[edit] Network effects were a central theme in the arguments of Theodore Vail, the first post patent president of Bell Telephone, in gaining a monopoly on US telephone services. The economic theory of the network effect was advanced significantly between 1985 and 1995 by researchers Michael L. According to Metcalfe, the rationale behind the sale of networking cards was that (1) the cost of the network was directly proportional to the number of cards installed, but (2) the value of the network was proportional to the square of the number of users.