Your post on specs made me think of Warby Parker, a company that sells glasses online. This company piques my interest because they sell frames online and you can get 5 shipped free to try on at home, the frames are mostly "Mad Men" type chunky vintage frames, they are only $95 each including lenses (more for high-density lenses though), and for every pair you buy, they donate a pair to needy people in developing countries. It seems like a very modern way of buying glasses that would appeal to people used to buying things online, a la Zappos. You can upload a photo and put "virtual frames" on them to try out, and post the pics on their Facebook page for feedback. I haven't tried them, but I might if I was in the market for a new pair.
Here's a NY Times article about the company:
http://www.nytimes.com/2011/01.....asses.html
I just tried the virtual try-on application and it's fun! Here are some examples: the Finn in Amber, the Langston in Amber, and the Nedwin in Amber and Summer Green. What do you think?