Anyone could post libelous statements on the 50+ million blogs and forums out there, yet you've never seen "Warn HN: Monitor your blog comments for libel" -- that's because you can't be treated as the publisher or speaker, so can't be held liable for what was said.
If you stole money from me, I sued you and won the lawsuit, and then published an article about how you stole from me, that could be construed as being libelous?