We once witnessed a plant’s reaction with a lie detector to someone’s bending one of its leaves and were pretty impressed that the plant exhibited stress. But Midori-san, a Sweetheart Hoya, makes that look juvenile in comparison. Satoshi Kuribayashi of KAYAK has developed sophisticated technology that allows the house plant to blog on line. With surface potential sensors, it measures changes such as temperature, vibration, and nearby humans. An algorithm translates that data into Japanese sentences that make up the blog. You can monitor Midor-san and offer it a dose of light through its site, which seems to lose something with the translation.