The World Summit on the Information Society set several targets to be achieved by 2015 without specifying how they could be measured. The International Telecommunication Union has proposed four specific indicators that could measure progress made by countries toward the foundational Target 10, that of bringing ICTs within the reach of a majority of the world’s inhabitants. Two indicators are for mobile subscriptions and use, and two for Internet use by individuals and by households. Of the four, Indicators 1 and 3 currently exist, albeit with significant shortcomings. This paper proposes a modest improvement to the method of measuring Indicator 3, Internet users, which combines the existing supply-side data with available but incomplete demand-side data.