AT&T's tracking stock and many other wireless shares seem to have followed their Internet precursors over the cliff. AT&T Wireless Group halved to $17.00 a share by year-end 2000. Does this mean wireless is doomed to the same fate as their landline Internet ancestors?

One thing is certain from this scenario, the wireless companies that do succeed in the future will be those that avoid the mistakes made by their landline Internet predecessors. Instead, many are heading down the same blind alleys, and they're picking up speed. Here are three major mistakes made by landline Internet companies playing out with surprising frequency in wireless strategies.