Jump in and check out Twitter for the purpose of business networking and customer communications. TIP: Send all your customers a link - make sure your invitation is relatively "human" as Twitter is definitely informal but a great way to market to your clients. Check out this informative article regarding Twitter from Net Registry.

Our prediction is that you have about 12 - 18 months to use this effectively before people get over the initial novelty factor (ala Facebook). In the meantime, ride the Twitter wave!