Can we talk?

Cell phones: They’re now constant
companions for 1.7 billion people worldwide. According to market research firm
IDC, more than 690 million phones were shipped in 2004 alone. In the first
quarter of 2005, vendors shipped 8.4 million "converged mobile
devices," meaning phones that also function as PDAs and can run many types
of software applications—an increase of 134 percent over the first quarter of
2004. More than 182 million people in the United States subscribe to cellular
services, and in 2004 they spent more than a trillion minutes using their
phones.

So, if you want to reach people…