I am being sued for slander on the internet

If the escort ad contains false and defamatory statements, then anyone who republishes it can be sued for defamation.  However, the person who claims to have had her reputation harmed by the reposting must prove that the statements contained therein are false.  Also, generally, they must prove how they were damaged by the statement (although there are some exceptions to that general rule).  I would need to review the actual posting to determine whether it conveys any defamatory information. This answer is given in accordance with the laws of Virginia and may not be applicable in any other state.  It should not be construed as legal advice, as that would require a more thorough analysis of all of the facts involved in a specific case.  If you need further information or assistance, please feel free to contact my office for a consultation. Case results depend upon a variety of factors unique to each case. Case results do not guarantee or predict a similar result in any future case.