Twitter is set to start peeking on users iPhones, iPads and Androids in order to see which apps they have downloaded. The company will start collecting the list of apps installed on those smartphones and tablets so that it can deliver tailored content that you might be interested in The data collection will allow Twitter to make better recommendations on who to follow, as well as insert content it thinks you will find interesting into your feed. The new feature, which Twitter has named app graph, could tie in with the companys recently announced Instant Timeline feature.”]