Good grief. You do not need to watch your site like a hawk for unusual activity or click spikes. You do not need to use a click logger, and these things are of less and less use anyways, as they don't work with Firefox or the latest version of IE. Google don't expect webmasters to go to this trouble.
Given that when the innocent are banned, having this type of information on hand is useful to the reinstation process, it seems reasonable for a webmaster to have it readily available.