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How does Twitter do this?

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How does Twitter do this?

#1
I am just curious, how does twitter send "twitts" to users of the service? Do they have an SMS server farm? i.e. computers attached to GPRS modems connected to the web? or do they just buy sms units from whole sellers? if they do so, it must be pretty expensive and do they make any money at all?. If anyone has any info about the inner workings of Twitter, i will love to have it. thanks

Re: How does Twitter do this?

#2
Given that they have a 250 message/user/week limit (or something like that), it would seem that they're losing money on every message. Given their high volumes, they are probably in a position to negotiate lower pricing with operators, however. Maybe they feed straight into the mobile operators' networks? who knows.

Re: How does Twitter do this?

#4
post #2

Given that they have a 250 message/user/week limit (or something like that), it would seem that they're losing money on every message. Given their high volumes, they are probably in a position to negotiate lower pricing with operators, however. Maybe they feed straight into the mobile operators' networks? who knows.

I think the 250 message/user/week limit is only in the UK (someone correct me if I'm wrong) and maybe Europe too.
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