[Analemma_]

Most of the photos McMansion Hell posts are copyrighted by someone else. That's why most of their posts have this disclaimer in the middle:

    Copyright Disclaimer: All photographs in this post are from real estate aggregate Redfin.com and are used in this post for the purposes of education, satire, and parody, consistent with 17 USC §107.

Zillow might simply be suing for infringement, in which case the Fair Use would have to hold up in court (as it is an affirmative defense)