Which eReader has the longest battery life? Amazon and Barnes & Noble are sparring over which device -- the Kindle or the Nook -- has the longest battery life, but the evaluating is being done under some misleading circumstances.

With the introduction of the Barnes & Noble Nook Simple Touch Reader and a price reduction on a 3G Kindle the low end of the eReader market just got a lot more crowded, as critical mass for eReaders may be arriving.

The third-generation Kindle is the best-selling item in Amazon.com history, beating out "Harry Potter and the Deathly Hallows (Book 7)," as the online giant sets sales records for the eReader at a time the eBook field is rapidly exploding.

With many state governments facing daunting budget deficits in coming years, they're looking for new sources of revenue. One prime source of that new revenue: throwing new taxes on eBooks and Internet downloads. Industry groups are already poised to stop the movement, but with 13 states already taxing downloads, they may be powerless to stop more.

Amazon is reeling from a controversy with very real consequences, first defending the decision to carry an explicit guide for pedophiles on its eBook store, then very quietly deleting the item this morning, all the while raising issues about censorship.