I'm currently writing a program that parses HTML pages, and yes I know I could use a module, but for me, I'm sharpening my regex skills the way I'm doing it. When I finish it, I will look at using the module to see if that simplifies my code, but not until.

I suppose it also depends on how important correctness is to you. If you're working on a project for your own amusement, where getting correct results isn't of earthshaking importance and you can fix bugs pretty much at your own convenience, rolling your own isn't a bad idea. If you need more robustness (business logic, public CGI, etc), you're much better off using a module that's already been tested to death. (This is the major advantage to using CGI.pm.)

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The hell with paco, vote for Erudil!
:wq