Google is quietly disabling the saved searches feature within Google+.
For example, I have saved searches in Google+ for pictures that match the term [google] but now when you access it via the Google+ Circles drop down menu, Google returns a notice that reads:
Saved searches are going away. Bookmark this page on your browser to save your Google+ search for later.
Google then links you to a page that explains how to use bookmarks.
This is not a major show stopper for me, but I assume Google wants to clean up the Google+ circles drop down menu.
You can access any existing saved searches from the Home > More menu until November 15, 2013.