It's easy to eliminate scammer preying on QRZ WTB ads. Simply follow QRZ's posted WTB Rule that says, " Prospective sellers MUST contact you using Private Messaging (PM)." Put a note in your QRZ WTB ads that says something like, "Contact me via Conversation (PM) only". A scammer will not burn a hijacked QRZ account to reply to your WTB via PM. Any email responses you receive will be from a scammer or from someone too challenged to read, understand, and follow simple contact instructions. Best to just delete those emails.