rev=made is a historical value used by browsers such as lynx to determine the email address of the web page owner/author. It is commonly (at least by links) only supported on the <link/> tag.
This is also, unfortunately, an example of the rev attribute being used wrong. Alice is not made by this page, but rather this page is made by Alice. rel=made or rev=made-by would be appropriate.
This content can be better got by using representative hcard.
<link rev="made" href="mailto:firstname.lastname@example.org" title="Alice" />