For the record, I have not asked anybody to post anything. I just asked people if they would please look into the situation and if they considered this protest to be a worthy thing, to put up a Fishman-homepage themselves, as many others had already done. Ever since, I am the keeper of the list of participating url's and compile a daily bulletin for all participants containing news, suggestions, questions etc, that people have send me. If anybody started this protest, it was CoS itself. Users' real names and their analogue addresses are hard to find, especially when providers refuse to give these to others unless forced to by a court-order.
Most participants are therefore rather safe.
Apart from the more conspicuous participants, that is. You guessed it. They found my address. In as far as I know, they have not yet sent Oussama such a letter. Well of course I'll inform my provider.