“Tweet to Eat” is a neat little campaign from Subway, linking Twitter, TV spots, and celebrity sponsorship.  A cool mix of media that we haven’t seen before, especially in conjunction with the likely PR bump from being a leader here.

We see a lot of companies, mostly retailers, analyzing “online-to-store” activity these days.  Haven’t seen anyone really quantify the social media effect on real life sales yet, but the day is coming.