An average federal indictment's stating of base facts ("on February 13th Nacchio sold 180,000 shares") is much more trustworthy than, say, the average Wikipedia page.

In court, the standard is that the prosecution should prove its case to the jury of the accused's peers beyond a reasonable doubt. That's great and should stay that way.

But for the purposes of Internet message board discussion, there's no need for that high of a threshold. The appeal didn't say Nacchio didn't insider-trade; just that his gains should be considered gains-less-taxes.