[Plugin: Cookies for Comments] how about multi?

I suppose this plugin should work on a multi-install, but after installing it yesterday (I already had Akismet and Bad Behavior) I do not see a drop of comments caught by Akismet using ‘network activate’. I’m now trying activation per subsite, but that shouldn’t make a difference, should it?

http://ww.wp.xz.cn/extend/plugins/cookies-for-comments/