So, people are scred of GG because it might mean more target adverts for them?
Pff, install Adblock for Android, go about your day without seeing any more ads than are already plastered all voer the damn place.
Oh wait... http://www.bbc.co.uk/news/technology-22166419 <- No ads allowed on Glass. SO bang goes that whole argument even if you are too lazy to bother with adblock.
Or is it people are afraid of being covertly recorded?!
http://cyclops.sunderland.ac.uk/view/index.shtml
http://205.167.90.185/view/viewer_index.shtml?id=1077
http://131.156.107.87/view/index.shtml
Random examples from a VERY large sample selection, available from ANY web browser and ANY search engine. Targeting YOU might be trickier, but given time i expect it would become possible to track an individual within a certain area.
Google Glass is not the problem. Belief that only the good guys spy on you is.