With all of the open source social media tools now available, this is easier than I expected: I ask a question on LinkedIn and get an answer from an expert (instead of spending five hours googling mybrains out).
My guess is that the technology that enables our brains to communicate with the internet will start with the treatment of major neurological disabilities.
While a deeper understanding of neuro-plasticity is extremely relevant for people who have suffered from a stroke or other traumatic brain injury, what has piqued my interest most is its application for those of us whose brains already work perfectly well.
Through my experience as a financial planner and a doctor, the people who stop being engaged get old quickly and their brains seem to slip away into uselessness much faster than those who keep working.