Cheaper, Effective Alternatives to One Laptop per Child program

Here's an great article discussing alternatives to the One Laptop per Child program. It also delves into how we determine social impact and how should be measured:

 "There appear to be cheaper, more effective ways to improve education in developing nations than the glitzy One Laptop per Child program"

http://www.miller-mccune.com/business_economics/computer-error-1390?arti...