Having your name attached to some published work matters more to an interviewer from some HR dept or recruitment firm, who has no technical knowledge whatsoever (someone who will ask you for a dozen references rather than asking you to solve one sample technical problem). (But then, if an interviewer has no technical knowledge, he probably wouldn't know what CPAN is and your authorship might mean little.)

A technical interviewer can and will probably (hopefully) just look at what you know rather than who you are.