> There's pretty extensive evidence of an attempt to impersonate him here.

What? Where? Just because of the github account that they chose? The site doesn't say that Jacob Appelbaum wrote any of it. They call themselves a victims' collective:

http://jacobappelbaum.net/#faq

I am guessing that they chose to plaster Jacob's face all over it just to make the site about him, and I find it very credible that most victims would want to remain anonymous given the kind of hounding and harassment that they are likely to receive otherwise:

    How old are you? How much do you weigh? What did you eat that day?
    Well what did you have for dinner? Who made dinner? Did you drink
    with dinner? No, not even water? When did you drink? How much did
    you drink? What container did you drink out of? Who gave you the
    drink? How much do you usually drink? Who dropped you off at this
    party? At what time? But where exactly? What were you wearing? Why
    were you going to this party? What’ d you do when you got there?
    Are you sure you did that? But what time did you do that? What
    does this text mean? Who were you texting? When did you urinate?
    Where did you urinate? With whom did you urinate outside? Was your
    phone on silent when your sister called? Do you remember silencing
    it? Really because on page 53 I’d like to point out that you said
    it was set to ring. Did you drink in college? You said you were a
    party animal? How many times did you black out? Did you party at
    frats? Are you serious with your boyfriend? Are you sexually
    active with him? When did you start dating? Would you ever cheat?
    Do you have a history of cheating? What do you mean when you said
    you wanted to reward him? Do you remember what time you woke up?
    Were you wearing your cardigan? What color was your cardigan? Do
    you remember any more from that night? No? Okay, well, we’ll let
    Brock fill it in.