I don't believe I fail to understand the freedom of the press. Websites are not treated as publishers - if they were, they would have the responsibility to regulate their content; freedom from such responsibility is not enshrined in the first amendment.
Interesting that you quote Zeran because this is the most used portion:
[[The specter of tort liability in an area of such prolific speech would have an obvious chilling
effect. It would be impossible for service providers to screen each of their millions of postings
for possible problems. Faced with potential liability for each message republished by their
services, interactive computer service providers might choose to severely restrict the number
and type of messages posted.]]
Blumenthal v Drudge, where they didn't hold AOL liable for paying to re-post a libelous Drudge column:
In recognition of the speed with which information may be disseminated and the near impossibility of regulating information content, Congress decided not to treat providers of interactive computer service like other information providers such as newspapers, magazines or television and radio stations, all of which may be held liable for publishing or distributing obscene or defamatory material written or prepared by others.
US v. Backpage:
http://www.dmlp.org/sites/dmlp.org/files/gov.uscourts.tnmd.5...
"On one hand, Backpage.com has painted a clear picture of the hazards of self-censorship if this is the case: websites such as Backpage.com will bear an impossible burden to review all of their millions of postings..."
They later quote that same bit about Tort in Zeran
There are about a half dozen others that reference the same bit about it being impossible and using the following chilling effect argument to uphold the application of section 230.