&gt; At some point we&#x27;ll have mind readers.  Be careful of thinking you want a jelly donut - Postmastes is already on the way.<p>For years, Target has been trying to find likely pregnant women based on shopping patterns.  There&#x27;s a strange anecdote where a daughter received pregnancy-related ads and it turned out she was actually pregnant!  NYT article discussing this: <a href="http:&#x2F;&#x2F;www.nytimes.com&#x2F;2012&#x2F;02&#x2F;19&#x2F;magazine&#x2F;shopping-habits.html?_r=0" rel="nofollow">http:&#x2F;&#x2F;www.nytimes.com&#x2F;2012&#x2F;02&#x2F;19&#x2F;magazine&#x2F;shopping-habits.h...</a>