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Summary:

At its first-ever developers conference — known as Chirp — which is being held in San Francisco today, Twitter co-founders Biz Stone and Evan Williams provided some hard numbers behind the growth and size of the social network. Here are some of the most important ones.

Twiiter, at its first-ever developers conference — known as Chirp — which is being held in San Francisco had its co-founders Biz Stone and Evan Williams provided some hard numbers behind the growth and size of the social network. Here are some of the most important ones we’ve collected so far:

* 105,779,710 registered users

* 3 billion API calls a day

* 175 employees

* 600 million searches per day

* 300,000 new users per day

* 180 million unique visitors per month

* 37 percent of active users use Twitter on their phones

* 75 percent of traffic comes from outside Twitter.com

* 100,000 registered applications

Related content from GigaOM Pro (sub req’d): As Twitter Develops, Developers Quiver in Fear

Thumbnail photo courtesy of Flickr user lrargerich

  1. 180mm unique visitors a month , how are they defining unique?

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    1. I’m afraid I don’t know that, Bob. If I get a chance I will ask.

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  2. Mathew, if you have the opportunity you should question those “600 million searches per day”. That number seems to be way off. It would put Twitter ahead of Bing and Yahoo and neck-and-neck with Google. So, how’s that possible?

    Compete says that search.twitter.com has just about 2.9M unique visitors per day.

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    1. Marcelo, the 600 million figure includes every search that comes through the Twitter index, and the vast majority of those come from third-party apps and services. Twitter also explained that this number includes Twitter widgets that display and update tweets, etc. Danny Sullivan has a good look at the issue here: http://searchengineland.com/twitter-does-19-billion-searches-per-month-39988

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  3. A number which would be interesting to get is the number of daily active users, the number of automated posts (which I believe is more than 50% of the active users).

    @Marcelo – compete.com has shown to be way off, but yes it’d be interesting to know if they consider API-based visitors among the unique visitors. If so, that would explain why the numbers are way off.

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  4. [...] Twitter: All the Numbers That Matter [...]

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  5. 37% of active users are mobile users. This is interesting!

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  6. Incredible! As in, not credible, self reported numbers. “Registered users”? Does that include affilliate spammers, deal offers, corporate marketing and advertising accounts–the kind of traffic half of those API calls support? I have three accounts myself. Am I three registered users? It would be nice to see some of the breathless journalists out there asking real questions.

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  7. christina sponselli Thursday, April 15, 2010

    75 percent of traffic comes from outside Twitter.com

    Curious about this stat. How are these users being driven to Twitter.com?

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    1. christina sponselli Thursday, April 15, 2010

      According to Alltop, this stat is for third-party apps.

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  8. [...] Twitter: All the Numbers That Matter (gigaom.com) [...]

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  9. [...] Datos increibles sobre Twitter. Ahora que empiezan a meter tweets patrocinados ¿os imagináis la facturación que pueden llegar a alcanzar? Han pasado unos años duros invirtiendo, pero ¡ahora vienen los ingresos! [...]

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  10. [...] Twitter: All the Numbers That Matter Tech Insider [...]

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