Quantum Information (New Scientist) — a gentle romp through the possible and the actual for those who are new to the subject.
Ambient Backscatter (PDF) — a new communication primitive where devices communicate by backscattering ambient RF signals. Our design avoids the expensive process of generating radio waves; backscatter communication is orders of magnitude more power-efﬁcient than traditional radio communication. (via Hacker News)
Top Free-to-Play Monetization Tricks (Gamasutra) — amazingly evil ways that free games lure you into paying. At this point the user must choose to either spend about $1 or lose their rewards, lose their stamina (which they could get back for another $1), and lose their progress. To the brain this is not just a loss of time. If I spend an hour writing a paper and then something happens and my writing gets erased, this is much more painful to me than the loss of an hour. The same type of achievement loss is in effect here. Note that in this model the player could be defeated multiple times in the boss battle and in getting to the boss battle, thus spending several dollars per dungeon.