Also, popularity data does help. Josh Friedman managed to get a season 2 of Terminator: The Sarah Connor Chronicles by showing the Fox TV programming executices youtube hits, Internet steaming videoes of repeats, and TV rating where the pilot episode is the most widely watched pilot in TV history and the season 1 had lots of hits on youtube and fan sites.
Placing well crafted spots in high traffic places with lots of visitors helps with that too.
Placing well crafted spots in high traffic places with lots of visitors helps with that too.