[jnbiche]

> but one vouch on a post won't rescue it

I've been able to consistently save dead comments with a single vouch, so I presume it only takes one, at least for some level of HN user.

[mindcrime]

Same.

FWIW, I've always treated the "vouch" feature as something to be used fairly infrequently, for somewhat exceptional cases. I don't know if that's actually the intent or not, but it "feels" like the kind of thing one shouldn't be doing all the time. shrug

[yegor256a]

Yes, same here. Just one "vouch" rescues a post.