06/23/2008 05:12 am ET Updated May 25, 2011

Internet Providers Threatening Monthly Limits On Online Activity

Some people use the Internet simply to check e-mail and look up phone numbers. Others are online all day, downloading big video and music files.

For years, both kinds of Web surfers have paid the same price for access. But now three of the country's largest Internet service providers are threatening to clamp down on their most active subscribers by placing monthly limits on their online activity.

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