There have been many threads started about "Steam" and what it is or is not. Other threads have been started about "Service Plays". It has been my experience that often times the player mistakes the release of certain Service Plays with Steam. Currently as I write this, there is a great deal of line movement on a number of games released by Services. To most players, this would be interpreted as Steam because they don't necessarily know the reason behind the move. Steam is a whole different animal, in my opinion. Point here is don't necessarily equate large line movement as Steam but rather a release from a particularly popular Service. Futhermore, note that the lines on Saturday begin to move significantly at 10:00 a.m. EST or so, the time many of the services release their plays. Just my thoughts. Feel free to add your own.