Jon Robson, 08/02/2014 15:48:
I'm mobile design gave us a huge amount of useful direction on this.
As a result we say last modified 3 minutes ago by Amir with 3 minutes ago linking to history and Amir linking to information about you.
Well, that's ancient stuff, apart from the controversial addition of the "by X" part. https://www.mediawiki.org/wiki/Extension:LastModified It was decided to implement it in core but it got lost before getting to a PHP implementation, it seems.
Nemo