The BUYER is not buying the information on the MLS, nor on Trulia, or any other websource.
They are not buying PROMISES, nor OPINIONS, nor Word-of-Mouth:
The Buyers are buying a HOUSE and Property; and it is in their best interests to check everything out.
The old saw is about buying swamp land in Florida without seeing it.
Everyone who POSTS information, disclaims the source and accuracy; so anyone who buys, based on something printed somewhere, gets what they deserve.