The Sony Lifelog is a device that allows you to monitor your cat's activities from the comfort of your Twitter account. This is highly useful for people with rambunctious cats...or people with no lives.
The Sony Lifelog sounds like a great idea, but it could also be a fail waiting to happen. Cats are one of the biggest memes on the Internet, meaning that if the Song Lifelog ever makes it into the mainstream this device will be forever mocked. Plus, who really cares if kitty is eating tuna or going on a walk? Don't answer that.