I don't have any idea how easy or hard this would be to implement, but instead of a global control, it sure would be swell if the user could select either their own content, or everyone's, to be listed.
Then on a big site with lot's of content, he could bring up only his own stuff to browse through - default. If the post is not about himself, he could check a box in the tools pop out screen, to search for everyone's.
--
Ken Rich
indiegospel.net
updated by @ken-rich: 12/31/14 12:30:11PM