I found this article over on www.dietrolldie.com where P2P attorney Keith Lipscomb apparently knows how weak is cases are so he is sending letters requesting potential extortion demand letter/lawsuit victims to basically supply the evidence he needs and incriminate themselves. He has a very nice letter questionnaire. The story may be found here:
http://dietrolldie.com/2013/01/28/lipscomb-fishing-co-or-exculpatory-evidence-request/
http://dietrolldie.com/2013/01/28/lipscomb-fishing-co-or-exculpatory-evidence-request/