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One study he points to, for instance, showed that Web-savvy people have double the level of activity in the parts of their brains that control decision-making and complex reasoning as their counterparts who are Web beginners. (via Popgadget Personal Technology for Women: iBrain - New book tells us that texting and web browsing are changing our brains)

So all this Tumblr business is good for us, yes? Right?