Michael Arrington

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It’s time to start comparing the big global social networks on something other than unique visitors and page views. I believe an effective way to value a particular user is based on the average Internet advertising spend per person in the country they live in. The higher the spend, the more value the social network can get out of the user by serving them advertising and other products. That means that, for now, users in a handful of key countries are worth far more in terms of revenue potential than those in the rest of the world.

We’ve begun to build out a model that looks at social network usage by country and compares that to available data on total Internet advertising spend in each of those countries. The model is then able to turn an apples-to-oranges comparison into an apples-to-apples comparison. The early results are surprising.

The ultimate financial value of anyt asset is, ultimately, what the market will pay for it. We have only a few data points to help us: Facebook, Bebo and LinkedIn are worth $15 billion, $850 million and $1 billion, respectively, based on relatively recent valuations (although only Bebo was actually sold completely; Facebook and LinkedIn raised investments at those valuations). The last valuation of MySpace was just $580 million, back in 2005 when it was acquired by News Corp.

Which valuation is most “correct?” It’s hard to say based on the data that’s been available to date, which is mostly just aggregate page view and unique visitor numbers from Comscore and other services. Based on worldwide unique visitors, for example, Facebook recently overtook MySpace to become the “largest” social network.

According to raw worldwide user number, the biggest social networks are Facebook, Myspace, Hi5, Friendster, Orkut and Bebo, in that order. But when you apply the model that we’ve created below, which takes into account where users live, the rankings change substantially. MySpace is by far the most valuable social network based on available data. A competitor like Orkut is worth only 1/20th of MySpace, even though it has nearly 1/4 the number of users.

Properly Ranking Social Networks

Our model takes Comscore data for available countries and regions. We’ve graphed each of 26 well known social networks with the data we have been able to collect. We’ve then calculated the average advertising spend (estimated by