See "WCF WebInvoke problem getting WSDL". David, the questioner, is clearly responding to a comment which no longer exists.
This is not the first I've seen today. "WSE 2.0 SoapHttpRouter: Is it possible to route soap messages with already attached client certificate?" is a question where I would certainly have commented that WSE is obsolete. In fact, the OP appears to be answering a comment like that. Yet there is no visible comment he could have been responding to.
Are these comments actually being deleted, and if so, should they be deleted?