vimm writes "Senator Herb Kohl (D-Wis.) has started an inquiry on the rising prices of text messaging (up 100% since 2005) that has occurred almost in sync with the consolidation of 6 major carriers down to 4. In a letter sent to Verizon Wireless, AT&T, Sprint Nextel, and T-Mobile, Kohl said the increase 'does not appear to be justified by rising costs in delivering text messages.'"
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