The homepage for the various dcop ebuilds in portage are all set to "kde.org". A more specific and useful site to put there would be "kde.org/documentation/other/dcop.html". Reproducible: Always Steps to Reproduce:
Those ebuilds are for the language bindings for DCOP and not for DCOP itself, so the URL is not really relevant (maybe http://developer.kde.org/language-bindings/ ? even that does not look really useful though). Plese reopen if you have other suggestions.