ad:tech is the premier trade show for interactive marketing, so one would hope that the exhibitors attending would be well suited to taking their interactive marketing talents offline. Luckily for us, many of them did a great job, and over the next few days I’ll be featuring some of my favorites. To start things off, here’s a video of abcsearch taking full advantage of the power of promotional sonic rocks to generate buzz and drive traffic to their booth. Even with a packed, bustling convention floor, I could literally hear them from the next aisle over. Plus, there was no way to escape seeing – and hearing – attendees playing with them throughout the three floors of exhibit halls.