According to the New York county sites I have visited Jon, accurate and complete and official information is beyond the capability of the online sources themselves.

Do you put this disclaimer on your reports? "makes no warranty or guarantee concerning the accuracy of reliability of the content "
Or this: "shall not be liable for errors contained herein or for any damages in connection with the use of information contained herein"

You probably should if you are searching Cayuga county online. They do!
See their disclaimer here: http://www.landaccess.com/proi/DisclaimerCayuga.jsp?county=nycayuga