The article makes an analogy with email — right now, if you communicated with somebody through email a decade ago, you don't have to remember the specifics — as long as you didn't delete it or switch email providers, you can just search and look at exactly what was said. Of course, the power of such technology comes with trade-offs — not only would we be worried about the obvious privacy issues, but many people may feel restricted by always "performing" for the microphones. Some researchers also worry that if we have technology to remember for us, we'll put much less effort into remembering things ourselves.
After solving another five problems the page gave Rossett the option to submit his contact information and much to his surprise, a recruiter emailed him a couple days later asking for a copy of his resume. Three months after the mysterious invitation appeared, Rossett started at Google. Apparently Google has been using this recruiting tactic for some time.