I wasn't making any assumption, but I should have put a paragraph break to separate the fact (no example yet offered) from my opinion (that fear of liability is misplaced). With no break, it looked like I was drawing a logical conclusion, if p then q, and I was not.Because nobody has bothered to research your question, you assume a non-answer is an answer. Not a good assumption.
Thanks for digging up an example. That case is interesting but it specifically involved publishing libel, which is a crime but not usually an issue around here. And, the last paragraph of the link you provided:
In passing the Communications Decency Act of 1996, which, among other things, established immunity for internet service providers for publishing "information provided by another information content provider," 47 U.S.C. § 230(c)(1), the House explicitly stated its intent to overturn the result reached in the Prodigy case. See H.R. Conf. Rep. 104-58, at 194.
[emphasis added]
I'm still of the opinion that liability for forum content is a fake issue. Just look at the wild west nature you see in forums everywhere else, with no action taken against them.