No, anyomne can buy a vendor account for $500. If LE set up a honey trap they have one major obstacle, unless they are shipping real drugs then they are not going to get far are they apart from maybe some names and addresses of people who are trying to buy some drugs and if that is happening across international jurisdictions then good luck getting a warrant for erm... well trying to buy some drugs. Only buy from established vendors if you are worried you may be lured into handing over some details to someone you do not trust, personally I never use my real name (not advisable in the US) and I only use anonymous drops so good luck hitting the front page with that bit premo intel in clandestine operation.