Sony Ericsson Xperia X10

If you're in the mood for a year-old smartphone that's struggling to get to Android 2.1, know that the Sony Ericsson Xperia X10 is available as buy-one-get-one free until Jan. 1, 2011. At that point it'll be about a year old -- we had our first hands-on at CES in January 2010 -- and it's been plagued by a lack of updates ever since. But you can't beat BOGO, even on the X10. [via Twitter]