[paulojreis]

I totally agree, and that's not the issue at stake. The issue is: what should we do while people are not educated enough to make an informed decision?

Mozilla, Google (and some people in this thread) assume that it's right for them to decide if there are privacy concerns and advance with their initiatives. I don't. And they are, by marking this as opt-in, thinking for them.

[DCKing]

It's still someone's own choice to install a Wi-Fi router and powering it on. The fact that many of them don't exactly understand that it might be privacy issue (if and only if they put identifying information in the SSID) does not mean that Mozilla and Google are thinking for them. The assumption that the router owner does not mean the SSID to be public is also not warranted.

If the SSID was mandated to be identical to someone's name (or any other identifying information), I'd say the problem you describe was real. But since it the information broadcast is mostly pseudonymous, I think it's quite a small thing you are arguing. If people are including personal information in their SSID, by all means tell them!