I don't know if this is true, but I think it's because they're really old. If you look at all of the previous documents, they're photos of text, emails, and some of them books. They're not transcribed, so hard to search.

Also, you have to have levels of trust that the docs are real. These have been in a bunch of people's hands, but who do you send it too where it gets the biggest bang as being legit? NYT isn't all that trusted. Maybe The Guardian?

But then, you're also putting your own life on the line. What's Snowden or Reality up to these days? I can see why it's complicated.