There's been a lot of debate about how the Twitter messaging service might evolve to power applications in the enterprise. But as the debate goes on you have to wonder if some enterprising souls are not already using Twitter in a corporate context.

At an event at the Harvard Club in New York today, Mark Self, vice president of Motorola's Industry Solutions Group noted that it would not surprise him at all if companies with lots of mobile workers were not already using Twitter to update each other about their activities during the course of the day.

For example, mobile workers armed with smart phones could send text messages to each other after visiting an account to update each other quickly about what transpired at the account. Companies with large fleets of trucks could use Twitter to send messages to each other asking for directions or, given the price of gas, where the station with the lowest price gas is on any given route.

Whatever the case, it's pretty clear that organizations that don't want to invest in buying and running enterprise class messaging systems that then need to be integrated with mobile devices have a pretty powerful alternative in a free Twitter service and the existing smart phones they already have ready access to.

Even if most companies have not figured out how to use Twitter as an effective alternative for broadcasting text messages to a relatively small group of people performing similar tasks, it's only a matter of time before they realize that Twitter can function as a pretty handy alternative medium for ongoing collaboration.