Megsmamma You're not the first to think of wanting to create signals. But until the thing gets close enough to foolproof, most faders don't want to compromise their situation.
I think a set of exchanges could work. Something innocuous such as about weather, but with a word or phrase (not necessarily a loaded JWD term) that is a little unusual, such as "preternatural". Then, another question like, "Do you get your weather info off the weatherunderground online?" And a particular response like, "Yes, it's very good for almanac information, too."
From there, I suppose the next thing to do is come to the board and post a thread: Weatherunderground in CA (or whatever region one is at). See who responds to the thread. Decide if you want to reveal yourself by pm first.
You could still deny everything, I think, if you found a lurking elder instead of a fader/exJW. You could say you don't know whom he possibly contacted online on a board... but you do remember a simple conversation about weather the other day. That is all.
Two cents toward the idea, anyway!
bebu