The tablet market is still a one-horse race, but e-readers continue to ramp , and Walmart wants another piece of that precious pie at big box retail. Starting this week, the online retailer will deliver shipments of Amazon’s mighty Kindle 3G and ad-supported Kindle to over 3,200 Walmart stores across the US, where it will join the Nook and Kobo e-readers in competing for shelf space. Could this be the beginning of another e-reader price war? Perhaps not yet, but it could be one more retail channel for Amazon’s ethereal tablet . Kindle joins Nook and Kobo on Walmart store shelves originally appeared on Engadget on Fri, 06 May 2011 02:39:00 EDT. Please see our terms for use of feeds . Permalink