[kevkrom]

I don't get the postcard analogy. Don't you have to click on an email to open and read it? That seems the equivalent of opening an envelope.

An unencrypted email (or message board post, or whatever), is sent over an open channel. Anyone with access to that channel is able to read the content of the messages sent without disrupting the message at all.

[Glenn]

Anyone with access to that channel is able to read the content of the messages sent without disrupting the message at all.

I see now. Does that mean that Echelon will soon be defunded?