Can I take your number? <a href="http://brenchleyandmatfield.co.uk/bestherbalremediesorg-e520.pdf">howtomaintainyourhealth.com</a>  Facebook's so-called mobile app ads - which allow companies to promote their mobile apps to Facebook's 1.15 billion users - will include new capabilities designed to boost the amount of time that consumers use the third-party apps, the company said on Tuesday.