This is a great popular-press article on the way corporations and individuals are jumping into the use of tDCS and other potential brain-enhancement technologies: http://news.nationalpost.com/2013/06/12/transcranial-direct-current-stimulation-tdcs-technology/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+NP_Top_Stories+(National+Post+-+Top+Stories)