Since AdvancedSearch examines text does it "open" the message, with
respect to 1. spam originators getting a "ping", 2. virus firing, 3.
messages are marked as Read? (The only way I am familiar with spammers
getting feedback is by sending a graphics link with a unique URL, so
that if you open a message traditionally in the manual interface with
graphics enabled, you validate your existence to a new scummy friend.)