Web bugs for statistical data are a legitimate want but potentially a
horrible privacy violation.
So I asked on wikitech-l, and the obvious answer appears to be to do
it internally. Something like
http://stats.grok.se/ only more so.
So - if you want web bug data in a way that fits the privacy policy,
please pop over to the wikitech-l thread with technical suggestions
and solutions :-)
- d.