I have a few problems with the proposal as stated in that blog. (I'd post there directly, but I'm not going to create a login just for this.) First, as a programmer, I don't like the O(n^2) nature of the solution — that is, all n sites having links to all other n-1 sites. And although it sounds nice in theory, keeping the menu unified by having a common file which all of the sites suck in isn't realistic, as each site has its own infrastructure and layout. In particular I'm thinking of sites like PerlMonks which are rather "reluctant" in their javascript support.

A workable solution to the above would be to have a "dumb" version which is simply a link to the menu, javascript and all (when allowed by the client), hosted on a single central site — maybe www.perl.org. We could easily add such a link/button on PerlMonks. To be honest, I don't understand why the "mega-nav" menu is so great. To me it's just gratuitous use of the technology. Opening the menu on another page works about as well and at a much lower technology cost.