Anyone can sue anyone. That is not news. Intended Use and Intended User both have specific meanings within USPAP. The best that an appraiser can do is to be quite specific as to who (or, 'what') is an Intended User and the specific...specific...Intended Use of the appraisal. Do you recall circa-2004 when the language for the proposed new certifications and limiting conditions in the current Fannie forms were being discussed? I so recall. Early on, Fannie had the borrower (and others) was to be an Intended User (side-note: which indicated to me that they knew not what they were proposing); that was shot down but did become a part of the "may rely" language of the current Cert #23. The best the appraiser can do is be quite certain, quite clear, quite specific, in alerting (in the report) as to who is the Intended User(s) and what is the Intended Use.