When I walk down the street I often see someone wearing some clothes that look fantastic. I hope an entrepreneur creates an Glass app that overlays a list of stores where I can buy each item along with the price. It would be even better if it could save a photo of the person and notify me if something they are wearing goes on sale somewhere. If everyone's 'favorites' pictures were stored in the cloud you could sell the data to vendors to let them know what people wanted. If I could set a trigger "let me know if x goes on sale for less than $y" you could sell that data to vendors too (sort of like they have bidding for empty hotel rooms).
I know there's some startup that already tries doing this but they also told me that automating something like this with machine learning is an almost impossible task.
