Track nootropic use statistically - ie 'does ginko biloba help memory?' Does TDMS work?
(note - have not used this software yet so dont know what IS tracked)
Since you are already collecting long term data on the nature of memory, it would seem relatively easy to add some additional information to see what things improve/impair memory. Herbs, supplements, amino acids, transcranial magnetic stimulation. If people clearly try it (ie six weeks on, six weeks off) anything that actually works should show clear statistical differences and give ideas for further, specific studies, based on widespread anecdotal tracking. Likewise long term effects could also show - does the effect reduce with long term use, show rebound deficiencies, etc.