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RSE. Réseaux sociaux pro. Usages. Généralités. Google+ Facebook. Web 2.0 Summit 09: Sean Parker, "High Order Bit: The Rise of the Network Company" Graphs cdixon.org – chris dixon's blog. A graph consists of a set of nodes connected by edges.

Graphs cdixon.org – chris dixon's blog

The original internet graph is the web itself, where webpages are nodes and links are edges. In social graphs, the nodes are people and the edges friendship. Edges are what mathematicians call relations. Two important properties that relations can either have or not have are symmetry (if A ~ B then B ~ A) and transitivity (if A ~ B and B ~ C then A ~ C). Web services should be both federated and extensible cdixon.org – chris dixon's blog. One of the most important developments of the web 2.0 era is the proliferation of full featured, bidirectional APIs.

Web services should be both federated and extensible cdixon.org – chris dixon's blog

APIs provide a way to “federate” web services from a single website to a distributed network of 3rd party sites. Another important web 2.0 development is the proliferation of web Apps (e.g. The Unlit Social Graph - TNW Location. A few years ago, it was not uncommon to hear search people talk about The Dark Web (also known as Dark Net or the Deep Web).

The Unlit Social Graph - TNW Location

Basically, the Dark Web is made up pages or files that are unreachable by search engines. Examples of this sort of content include information that sits behind login, or pages without inbound links. Some estimates put the Dark Web at about 400 times the size of the Surface Web (content indexed by search engines). Google has invested tremendous resources in lighting up, or indexing these hidden pieces of content. The Implicit Social Graph. John Battelle wrote a gushing post about Color and what it means for mobile/social/local/realtime, augmented reality, and more.

The Implicit Social Graph

There are most certainly some big ideas in the Color app. I've never put a mobile photo app on my phone but I put Color on it last night. The Social Graph Is Not Enough to Find a True Me. Last week, I gave a presentation at the Kynetx Impact conference just outside of Salt Lake City, Utah, talking with the developer audience about the Third Wave of the Web, and my continued belief that true personalization in both the Web and in our mobile content consumption is what will drive the most dramatic changes to the future of the Internet, following on to the first wave (Information Retrieval and Search), and the second wave (Social Networking).

The Social Graph Is Not Enough to Find a True Me

Most directly, I believe that the current approach taken by many leading Web companies, to assume that your friends' recommendations and shares constitute personalization for you, is not enough. True personalization is about your own interests and preferences. The most well known example of recommendation services that rely almost exclusively on your social graph is that of Facebook, where it's generally assumed that if many of your close friends like a topic, that you will as well. Les tentatives de Google dans les médias sociaux ( en 1 image ) Second Life Makes $100M A Year in Revenue [Updated] While the real-world markets take a nosedive, a virtual world's economy is on the up and up, and its parent company is reaping the rewards.

Second Life Makes $100M A Year in Revenue [Updated]

Second Life, the user-generated virtual world, generates almost $100 million in revenue a year, according to a new report on LAUNCH. A "company insider" says that Linden Lab has grossed over $75 million per year for the past three years and the company is profitable. But this isn't just another nine-digit number in the sea of Web business news. Linden Lab, the parent company of Second Life, simply charges fees on financial transactions. Its revenue comes from an entirely user-generated economy built on real estate, virtual goods and services. The project. Foursquare est-il déjà mort ? Ou le triste monde tragique des se. Why Entertainment Will Drive the Next Checkin Craze. In recent months, a crop of services have popped up that re-purpose the checkin concept, popularized by Foursquare, and connect it to media and entertainment, as opposed to location.

Why Entertainment Will Drive the Next Checkin Craze

In theory, the idea of checking-in to cultural concepts (like media, music, etc.) and not places is one that doesn't jive in the real-world. It would follow then that the apps that provide this service — GetGlue, Philo and Miso — are silly and far too extreme in ideology to attract anything more than a testbed tech audience. In practice, this alternative checkin behavior is one that is more cultural and familiar than anything the location checkin offers. In fact, it emulates the way we experience entertainment in our everyday lives. The desire to share is unchanging — it's how we share that will continue to evolve with the help of social media and entertainment checkin services.

Foursquare Is Five Times Larger Than Gowalla And Growing 75 Perc. Editor’s note: The following analysis is written by Robert J.

Foursquare Is Five Times Larger Than Gowalla And Growing 75 Perc

Moore, the CEO and co-founder of RJMetrics, an on-demand database analytics and business intelligence startup. Robert blogs at The Metric System and can be followed on Twitter at @RJMetrics. A Private, Anti-Foursquare To Geo-Fence Those Neer To You. If you are going to launch a new location app, creating an anti-Foursquare is probably not a bad idea.

A Private, Anti-Foursquare To Geo-Fence Those Neer To You

About a week ago, a Qualcomm-incubated project called Neer quietly launched on the Android market, and has been downloaded more than 10,000 times since then. Neer is a free, location-sharing app designed for private sharing between family members and people with close, real-world relationships. An iPhone app and Web interface are also in the works. Instead of implicitly checking into different spots like you do with Foursquare and Gowalla, or broadcasting everywhere you go in the background like you do with Google Latitude, Neer creates geo-fences that trigger location updates to your inner circle. As I explained in a post last May:

Foursquare’s Next Game: Choose Your Own Adventure? Foursquare is growing quickly, gaining momentum from mainstream deals, and now they have the money in the bank to keep it up.

Foursquare’s Next Game: Choose Your Own Adventure?

But the big question remains: can they keep it up in the face of major competition? Twitter already has location features, Yelp recently added check-ins, and soon Facebook will as well. How can Foursquare survive against competitors that have millions — if not tens of million or hundreds of millions more users than they do? Their answer, apparently, is to change the game. Stribe Opens To All And Starts Thinking About Its Own Open Graph.

Stribe had a good 2009. The service that aims to make it as simple as possible for any site to add a social network on top of their existing website was first unveiled in September of last year at TechCrunch50 in San Francisco. Shortly thereafter, in December, the service won the startup competition at LeWeb in Paris. Now they’re hoping 2010 will be even better. Tumblr Is On Fire. Now Over 6 Million Users, 1.5 Billion Pageviews A Month. One year ago, in July 2009, Tumblr was going strong. They had 255 million pageviews that month. By November of last year, that was up to 420 million pageviews. But some new stats which Tumblr is releasing today show an explosion in growth since then. Tumblr is now at 1.5 billion pageviews a month — their Quantcast data confirms this.

For the first time, Tumblr is now a top 50 site in the U.S. in terms of traffic as gauged by Quantcast. Google veut se mesurer à Facebook avec Google+