I propose immediately deprecating the "Contact Info" field of the Code Catacombs node type — that is, removing it from the Code submission form and from the Code display page.

In a huge preponderance of instances, the author either leaves the field blank or puts in their PerlMonks username. If the poster really wants to include other contact info, they can do so in the description field or in the code's embedded documentation, and in fact that is conventional for the kind of code this section is intended for. As it is, the section documentation says the Contact Info should be considered "very optional". Let's just get rid of it. It serves no useful purpose.