No single Android device is as ubiquitous as the iPad or iPhone, but Amazon's Kindle Fire has managed to capture over half of the market in Android tablets. The latest data from comScore indicates that in February 2012, the Kindle Fire made up 54.4 percent of market share in the category, up from 41.8 percent in January and 29.4 percent in December. The Samsung Galaxy Tab family, which held 23.8 percent of the market in December, is now a distant second at 15.4 percent, and every other major tablet group — with the exception of the Asus Transformer and the Lenovo IdeaPad Tablet K1, which held steady around 6 percent and 1 percent respectively — lost market share over the same time period.

Although some content, like browser pages, was viewed more often on larger 10-inch tablets than on 7-inch ones like the Kindle Fire, it's clear that Amazon's tablet is hugely popular compared to Android devices with larger screens and better specs. The Kindle Fire has a few things going for it: it's one of the cheapest tablets on the market, it's designed for ease of use, and it's backed by a well-known content provider and connected to its store. It may not be the most cutting-edge device, but it's apparently been good for Amazon in direct sales as well as in supplemental revenue like ebooks and movies.