If it can be included as a charge on an indictment, it can be the one and only charge in it as well.
> We should also think a little bit harder, I think, about whether posting a link is never criminal.
No, we shouldn't. Linking to and/or writing about anything (absent actual participation in a conspiracy) isn't a crime in a country protected by the right to free speech.
I think you've lost track of the context. The point is that nobody here was arrested and had his "life ruined" solely on the charge of having posted a link. Nor would the government ever be likely indict someone on only that basis (unless the case was very compelling, see below), given the significant likelihood of the sole charge being dismissed.
> No, we shouldn't. . . . (absent actual participation in a conspiracy)
That's not too different from what we're talking about , is it? Actual participation in a conspiracy (which, no doubt about it, can be accomplished by posting a link) or, I would add, acting as an accomplice.
But while I'm at it, your broader claim is also incorrect. How about perjury? You can do that in writing. Slander? Intentional infliction of emotional distress? Threatening the president? Mail fraud? Criminal contempt? Murder for hire? All crimes accomplished by writing about something that exist, yes, in a country protected by the right to free speech. There are many more.
Again, it's not the speech that's being criminalized; it's the intent animating it. Think of the link not as a crime in and of itself, but simply as evidence of Brown's effort to assist in the real crime, which was unambiguously illegal. If you follow the case closely, you'll see that's exactly what's being charged.
Nope. Ordering a murder is a crime. Sharing a link is not.
And I don't see how you can dispute that whether sharing a link is a crime depends on what is accomplished, and what is intended, by sharing the link. There is, of course, no law that criminalizes sharing a link per se. But there are plenty of laws that criminalize things you can do by means of sharing a link. Take GP's example. You write up a murder-for-hire ad on your private server and post a link to it on HN. That's solicitation of murder, no less than if you had made the solicitation in person or by mail. You may as well argue that talking to someone, or sending a letter is not a crime.
We should also think a little bit harder, I think, about whether posting a link is never criminal. It seems to me that if someone posts a link to intentionally further a criminal conspiracy, it seems like it could plainly, and unproblematically be criminal. Accomplice liability in particular makes lots of other things, that would otherwise be innocent, into crimes when they are done with the wrong sort of intent.