Yeah, but those are just the same people who were contributing bad libraries to CPAN five years ago, or writing yet another PHP messageboard. Ten years ago they were probably writing very-exploitable C. Which I'd probably do if I were to attempt to write C; I still really see myself as a scientist more than a programmer, and as a result I program as a means to an end, not an end in itself...

Anyway, you can usually spot them by mentioning AJAX (not that I have a problem with the technique, or the libraries - ones like JQuery are getting quite sophisticated and certainly very useful) and standing well back.