That's old hat - plus users complain that the overlaid images gives them migraine. The latest technology allows the information to be injected directly into your consciousness.
man, are the ads and spyware going to suck then. i can see the noob trick of rm -rf / bieng popular
some of the head mounted displays are nice, my personal favs are fairly scifi looking (ARvision-S @
http://www.trivisio.com/mixed-reality.html) as they are one of the few that has non tv resolution (800x600, basically the highest you can get ) and it supports vga, pal ntsc or USB as an input (only guys i know who do usb) so it isnt as hard to connect (
http://www.trivisio.com/cameras.html, seems they bump up the specs, most list pal/ntsc at around 320x240)
the microoptical stuff is good if you want somthing more invisible but it starts at $2000USDtthe one i likes alot cheaper at $899 (prices from
http://www.tekgear.ca/)still ther would be alot of bulk with all the cabeling and support stuff, i guess thats why most people build it into vests. that biometrics over bluetooth thing that appeared on hackaday was intresting however