Subway Commercial

I'm not sure if anyone has seen the new Subway commercial about the buy one 6-inch sub get one free for the month of April, but I personally haven't seen it until the past week. For full disclosure I have to admit I don't have cable so I'm not able to watch anything besides local channels.  There is nothing special about the commercial itself, but the timing of the commercial I thought made it interesting.  If they, in fact, did just start showing it in the second half of the month it seems like a pretty good get it now tactic.  They were probably offering it all month, but didn't advertise it so they didn't have to give out the discount as much.  They also put it into people's heads that if they don't come in soon they will miss out on the opportunity.  They might even come back several times in the next week or so.