Juniper Research predicts that the value of the mobile context and location-based services (LBS) market will more than triple in the next five years, thanks in large part to the adoption of highly targeted and context-aware ad-supported apps, which will account for over two-thirds of revenues. The research firm said context-aware and location services will generate $43.3 billion in revenue by 2019, up from just $12.2 billion this year. Social apps, such as Facebook (NASDAQ: FB), will be the primary driver of growth in ad-supported revenues related to apps.