Facebook and Twitter Q2 results will show if ad investments are paying off

San Francisco

TWITTER and Facebook's earnings reports this week will show whether the companies can wring profit from fresh efforts to attract advertisers and their marketing dollars.

Facebook has rolled out improved tools designed to help marketers reach users of its Instagram photo-sharing application and promote products via videos in its news feed. Twitter made key deals, acquiring a company that helps advertisers find potential customers across devices, while forging an alliance with Google that lets it serve ads more broadly via the Web-search company's Doubleclick product.