The email reads:
Mostly, we love sharing Glass with our friends, because adventures through Glass are more fun with others. Here's your chance to invite one friend into the Glass Explorer Program. Complete this form and share Glass with a friend, funny demo face and all.To be eligible for inclusion into the Google Glass Explorer Program, invitees must be at least 18 years old, live in the United States, and be able to pick up the device in San Francisco, Los Angeles, or New York City.
It's unclear if every member of the Google Glass Explorer Program has received an "invite to invite" email or not. The company has said that they have sent all the email invitations -- for now -- and that there may be more in the future.
It's possible that Google found itself with some leftover Google Glass Explorer Edition smartglasses when some winners of its earlier promotion opted out of pulling the trigger on actually buying the devices. After all, the devices aren't cheap -- $1,500 -- and the restrictions on having to pick them up physically in only three cities probably turned off some.
These are also beta versions of the product, and the final version will likely differ. Hopefully, it will differ in one respect: battery life.
Google Glass is, of course, Google's foray into wearable computing. The company is expected to release a consumer version later this year or early next.
Other companies, such as Microsoft, Apple, and Samsung are said to be exploring their own wearable computing programs, although mostly focused on smartwatches. Google is also pursuing a smart watch, it is rumored.