My friend and co-worker, Anne, was presenting in the room beside me at the Adult Basic Ed. conference.  Her topic was "Effective Presentations", and is all about how to create a good one.  My topic was "Cyber Safety", and like I said - we were in adjacent rooms.  We both experienced the curse of the "blue people" that make your computers do wacky things, and just attributed it to Halloween.  Well, we just realized we have the same brand of mobile presenter (slide advancer)!  Instead of little "blue people", we were just experiencing "dueling presenters"!!!  I guess I won because she turned hers off and gave up.