You can vouch for dead comments and bring them back (they can still end up dead again if flagged enough). Click on the timestamp for the dead comment and click

You can vouch for dead comments and bring them back (they can still end up dead again if flagged enough). Click on the timestamp for the dead comment and click on `vouch`. I don't know if there's a karma limit needed to vouch for comments. And you can (and I think most people ought to) turn on `showdead` through your profile so you can see dead comments. Not all are worth vouching for, but many are.