Thanks for useful tips and link, I've added the "any" but still I feel
this will require some more attention.

> which has some nice warnings about anonymization.  As long as you never
> release anything but grouped statistics, I think you would avoid this trap.
> But again, it is good of Ingo to have urged you to take care in this regard.

Well, I basically wanted to say, that I will not publish the games the
user submits, neither link to the results page (which is "public",
though the adversary would have to guess the hash), nor pinpoint the
user in a paper, so that the user won't have to worry about submitting
his private collection he would not like for the world to see. Of
course, it depends on what pinpoint exactly is - as the article you
linked shows - how big the grouping to average over has to be for the
stuff I publish to be anonymous. But this is rather delicate and I
would like to avoid as much law-related stuff as possible.

> If you ever make publicly accessible on your site anything like:  "Look here
> are about 50 games of "TheCaptian" on KGS, with an analysis of their style,
> then that is a problem.  (My apologies for picking out one of my favorite
> players to watch and bringing his nickname in to the example.)
>
> Since KGS makes these so freely available, then actually you do not need
> "TheCaptain"s permission to do this analysis, do you?  Hopefully you do not
> create a violation of KGS's terms of use or privacy policy whatever that
> might be (I don't know if they have one).
>
> Also, suppose "TheCaptain" was actually my nemesis and I wanted to learn how
> to beat him. Does anything on your site prevent me from pretending that I am
> him and submitting a bunch of his games for analysis? Then I would get the
> recommendations of how to beat him directly, I guess.
>
> Given this, Ingo may have even deeper concerns vis-a-vis your site than he
> has yet voiced.  But personally, I don't disagree with anything I see you
> doing.  For instance, I don't think there is anything wrong with either 1 or
> 2 above.  Just that I thought they were worth thinking about.

Hmm, I am not giving the "adversary" any more information (though
maybe in a different form), than already available from the publicly
available games in the case of KGS. The KGS function is basically a
shortcut (saving the user like 5 clicks), since anyone can download
the games from KGS himself and upload the archive to the webapp
manually, so I do not consider this as the main obstacle. As far as I
am concerned, this does not violate any of the KGS policy (though I'd
better get an explicit permission). Once your nemesis publishes his
games, you can prepare to meeting him anyway :-) Still, before adding
the TheCaptain's link on the page, I'd consider asking him a good
manner..

Thanks again for the feedback,
JM
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