Interesting finding, though perhaps not all that surprising.

Other interesting data in the study:
- 38% of ALL teens, regardless of cell phone ownership, text on a daily basis (and 76% of teen cell phone owners have ever sent a text message). This is relatively consistent with other numbers I've seen (Comscore reports 80% of cell phone subs age 13-17 have sent a text message).
- 77% of teens own a game console like an Xbox or a PlayStation
- 74% of teens own an iPod or mp3 player

Managing a marketing program across all these devices and platforms is already challenging; but fragmentation shows no sign of slowing down. That's why it's so important to be testing and experimenting now - it takes a good bit of trial and error to get it right.