Targeting wearables

This is general on any wearable but it absolutely applies to glasses. The important stuff is to realise how limited your information display is, how limited the navigation is and how intimate you are with the user.
So you will have short context switch time, limited integration time and very limited drill down opertuneties.

This is a challenge for anybody targeting these devices and it is a very big challenge for any business model which includes advertising. I guess we are facing something similar to the early days of mobile  services, granted the display are not as bad as they used to and the bandwidth is something altogether different.
However relative to the users main device I think a lot of the similarities still holds true and we will have to think quite differently when developing for these devices. To exciting thing is like all disruptive changes it places all incumbents in a disadvantage while opening the floor to new creative players. Just think about google, apple vs Microsoft back in days.