This document discusses the opportunities for telecommunications companies to leverage their network capabilities through APIs and enable the development of new applications and services. It notes that while app stores themselves do not generate significant revenue, Web 2.0 applications could benefit from access to telecom capabilities like voice, messaging and location. The document examines different API approaches and the views of developers and operators on third party access. It concludes that telecoms should focus on enabling the right capabilities for specific high-value niches rather than just messaging and location or chasing the long tail of developers.