John Galban wrote:

You can bet that I already have. Most of the ones I know are not
Internet savvy and have asked me what the story was behind the
solicitation from Airnav. I've encouraged all of them to sign up, but
to many of them, paying for a listing on the Internet is like paying
for a billboard on Mars. They just don't go there.

But can you imagine the publicity should one of the rovers snap a picture of
a billboard?

Excuse me...I've a business plan to write up...

- Andrew