in reply to "Vanity Tagging" on CPAN?
The naming conventions of Java packages are along these lines, although this is mostly for organizations (e.g. org.w3c.dom.*).
A reasonable approach to avoid confusion might be to prefix the name to the category name, so for your example that might be 'BUU::Net::IRC'. I think this would limit confusion.
Just my 2 cents, -gjb-
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