proclog.pl processes Apache log files and extracts search keywords or phrases. This gives me what people are typing into search engines to get to my site.
This is not a finished script, the report it creates is not beautiful, the data is fairly raw but it gives me a rough idea of what terms are being used.
The report is spit out to the standard output (screen) so be sure to send it to a file if you want the report in a file.