The Adobe leaks list is mostly made up of verified emails, so...
Coming to think of it, there has been some spam lately (though that hasn't happened in years now at gmail), and I wonder whether it's related to that Adobe leak.
On a risk / reward basis the benefit to checking here is actually pretty high.
I don't find any of several accounts I use on there, but did find a friend's email listed (and just notified him). I'd actually appreciate a way to query my mailing list in an automated fashion.
That's been the conventional wisdom for decades, but I don't actually think it's true. I wonder if anyone has done any tests.
The reply address for spam is almost certainly bogus. And I don't think it makes sense to target people who unsubscribe for more spam. They ain't likely to buy anything.
Secret, probably not. But in most cases I'm reasonably confident that each email address I use is currently only known by me, the one site I registered it with and the NSA.
I have a couple of email addresses that thanks to that address either having been sold, hacked or given away by including in the to/cc field of a mass mailing are now out in the public domain, and I get spam (and almost certainly malware attempts) on those two on a pretty regular basis. I'd prefer to not have the rest of my email addresses end up in the same situation.