SEOPTI - 11:15 pm on Nov 25, 2012 (gmt 0)
You can even check in Analytics with Advanced Segment: Direct Traffic and you will find Slurp counts as direct traffic or direct visitor.
Look at this:
220.127.116.11 - - [25/Nov/2012:13:26:06 -0500] "GET /texas/widget.html HTTP/1.1" 200 5978 "-" "Mozilla/5.0 (compatible; Yahoo! Slurp/3.0; [help.yahoo.com...]
and every time Slurp appears in my logs it is followed by the Mediapartners bot:
18.104.22.168 - - [25/Nov/2012:13:26:07 -0500] "GET /texas/widget.html HTTP/1.1" 200 5978 "-" "Mediapartners-Google"