The Transcom Dropcatch Backorder has been operational for a couple of months now, lots of great catches.
Domains can be added on the fly and you can monitor the activity live. Multiple submissions for the same name are accepted, in which case wins automatically goto a short auction.
Its a simple Simple 2 line registration , best to use your TAG, DNForum or Acorn ID as a username, but any is fine.
Good Catching !