Akismet Credit Inserter
A very simple mu-plugin to automatically (automattically?) insert a “Spam prevention powered by Akismet” notice (with hyperlink to Akismet.com) in the footer of each blog hosted on a WordPress Multiuser service to abide by the licensing terms of Akismet.
You can download a copy of the plugin from WordPress.org’s plugin repository. I told you it was a simple plugin…
[...] Akismet Credit Inserter [...]