NBC's online Olympics coverage probably helped TV viewership
The ratings suggest that the Internet actually served as a great promotional tool for the television broadcasts, rather than as a competitive medium siphoning viewers away. Every medium has its place: There are things newspapers, radio, television, and the Internet can each do that the others cannot.
The mobile phone may be the most useful invention for Africa in decades
Its value is multiplied several times over by the advent of SMS and mobile Internet access. The spread of LED lighting may also prove to be a huge bounty, since LEDs create light from very little power.