Telco interest in working with third-party service providers and developers is growing fast, and with good reason.   In the 15 years since the Internet became a global phenomenon, there has been an intense growth in the number of services that customers are able to access through their telecommunications connection, most of which have been created and supplied by third parties.   Network providers basically today have two choices - a) to be providers of only a small number of mostly commoditized services, b) or to work with third parties to add value to the customer's overall experience of using Internet and Web services.   The shift to third-party services is accelerating as more software platforms are making it easier build and upload new ideas to the Web's expanding community of users. Look no further than Facebook to realize the wide range of ways in which open platforms are being used to leverage businesses and expose them to greater opportunities.