Sirius Black

That's right! We never mentioned it, but Terry just lived for your Grim Truth posts. And he wrote back to you, too, commenting on the posts using our Lock, even though he knew you'd never be able to read it. But he still needed to write it, to tell you he believed you, and he'd give anything to be able to tell you how much your words meant to him. We think they really helped him hang on during the worst days.

And he's just one person. There are countless others like him, no doubt.