The intention is to provide a useful resource for inexperienced Perl programmers and to attract and retain experienced programmers who can make a substantial contribution to the group. However, if you're asking this question or don't buy the above rationale, there is no reason for you not to continue using clpmisc. The existence of clpmod has no bearing on clpmisc. Don't forget that there is also an unmoderated group for discussion of the Perl language, comp.lang.perl.misc , for topics that do not fall within the bounds of clpmod's charter. The perlfunc man page will give you more information on the return values from functions.
Many reusable modules are available for immediate download and use.
Another excellent dead tree resource is the first and only periodical devoted to Perl, The Perl Journal. Perl 5.6.0 is the latest and most stable version of Perl. Many bugs have been fixed with this release, several useful new features added, and much more documentation has been provided. Good luck with your Perl work. Posting to moderated newsgroups should be no different than posting to unmoderated newsgroups.