By Jonathan Fildes
BBC News science and technology reporter in Edinburgh
The web should remain neutral and resist attempts to fragment it into different services, web inventor Sir Tim Berners-Lee has said.
Recent attempts in the US to try to charge for different levels of online access web were not "part of the internet model," he said in Edinburgh.
He warned that if the US decided to go ahead with a two-tier internet, the network would enter "a dark period".
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But telecoms companies in the US do not agree. They would like to implement a two-tier system, where data from companies or institutions that can pay are given priority over those that cannot.
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The internet community believes this threatens the open model of the internet as broadband providers will become gatekeepers to the web's content.
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more:
http://news.bbc.co.uk/2/hi/technology/5009250.stm