The post's heading 'Ten countries to learn from' is at odds with the paragraph that follows: 'Are these sorts of projects good ideas? It depends. The devil is often in the details (and the cost-benefit analysis), I find. Whether or not they are good ideas, there is no denying that they are occurring, for better and/or for worse, in greater frequency, and in greater amounts.'
If it's not clear that OLPC is a force for good, let's please not post on a World Bank blog that countries using it as an educational tool are countries to 'learn from'. It's rather misleading and dangerous.
Here's reference to a study on the efficacy of learning: http://www.economist.com/node/21552202
Here's the study, which finds that OLPC doesn't help with literacy or numeracy: