Zope, and most CMS-es in fact, is not optimized to write on every page access. This makes page counters impractical. Add a squid cache and most visits won’t even be seen by your CMS.
Linktally utilizes your Squid, Apache or Zope log file to periodically tally content accesses. A separate tool then provides rankings (by type if need be) for the past week, month and year.
