Did you really write these scripts?
Yes, I've created all of the scripts and content on xav.com.
Some Perl code has been contributed by customers. For each script, about 1-3% of the code is contributed and the rest has been written by me. All of the code, of course, has been heavily influenced by the feature requests and bug reports that customers have made. Contributions range from a general "make it do this" to very specific "line 1234 needs a 1 instead of 0". Also, all of the translations have been contributed.
"Did you really write these scripts?" http://www.xav.com/scripts/misc/1012.html