Elephant In The Room - Seat "Stealer"

Not quite sure what to make of seat "filling". Those who have done so may have mixed views as well. Those who have blinked,(except palin), held lobby court a little to long or chatted up their fellow colleagues a little to far from seat to find their ticketed seat filled by a steala "filler" as well, may hold a more agitated opinion of the usefulness of this practice.(a phenomenon used mostly by "Hollywood" to give the illusion of standing room only crowd, as if someone looks at their screen and notice 4 vacant seats in a sea of sitters).