I think I may have finally found a solution to the click path tracking question: http://www.sebastian-bergmann.de/blog/archives/446-Second-Release-Candidate-for-phpOpenTracker-1.5.0.html
To summarize, setup was simple, integration was simple, it doesn’t have a packaged web interface to speak of. It is only marketed as a framework, so a nice interface shouldn’t even be expected really.I recently read through Sebastian Bergmann’s announcement regarding a new release canidate for phpOpenTracker. I have for sometime been thinking about implementing some sort of click path software for my site that could eventually be packaged and used on all of my client’s sites. Well it looks as though Mr. Bergmann did this work for me. Integration with serendipity was fairly simple. And the example back-end analyzer worked well. I do wish it came with a more complete interface. It is however only marketed as an API, so the fact that there isn’t an extensive interface is acceptable. I am going to try my hand at making a nice viewer for the API. If it works out I might just send my "stuff" to the phpOpenTracker developers and see if they want to link it. I’ll keep y’all posted.