Facebook is putting a halt to its tests for an ad network that would have let it place its own ads in other mobile developers’ and publishers’ apps. The AdSense-like network won’t be realized for at least another few months. Spokesman Brandon McCormick told AllThingsD: “While the results we have seen and the feedback from partners has been positive, our focus is on scaling ads in mobile news feed before ads off of Facebook.” [Source: AllThingsD]