In 2005, Nicholas Negroponte, who previous founded MIT's Media Lab, founded One Laptop Per Child (OLPC), which works with the United Nations Development Program (UNDP) to deliver low-cost laptops to children in developing nations. But this week, OLPC announced something a little bit different.

The Nexus 7, built by Asus with close oversight from Google, is the best Android tablet and the best seven-inch tablet. If you have already convinced yourself that you want either of those, this is the one you want. It's nice to be able to say that so concretely! But where the best seven-inch, or even the best Android tablet falls in the overall tablet market is the more important question.

We all like pie graphs, especially when they're about hot gadgets. One online analytics group has served up interestingly-flavoured pastry-based visualisation, showing the Kindle Fire now sharing top spot as the most used Android tablet, taking a third of the total Android tablet usage pie and eating into the huge portion the Samsung Galaxy Tab held in November last year.

People throw around a lot of big phrases when they talk about the Kindle Fire - "iPad killer" being an oldie but goodie. But after spending some time with the 18-centimetre Fire, one thing is abundantly clear: this ain't no iPad killer. This right here is something else entirely. Less a "tablet" in the sense we've come to think of it than a content-delivery device, the Kindle Fire is a window to serious, non-stop entertainment consumption. And Amazon shopping. Lots of Amazon shopping.