Interpersonal communication can take place using a variety of communication mediums. In the last couple of years mobile phones have become extremely popular with millions of short message service (SMS) messages being sent every month. Many businesses use SMS messages to keep their roaming sales forces up to date with their latest product prices, stock availability, urgent news, and even phone calls that they've missed while they've been out on the road. Lately some businesses have also started to SMS their customers, telling them about their latest special pricing offers, new products, free shipping deals, etc.
