Facebook and Apple deepened their alliance on Monday, as Facebook Gifts is starting to sell iTunes digital gift certificates. Upon purchase, Facebook users can suggest what music, video, or apps their friends should spend their $10, $15, $25, or $50 credit on. By adding one of the world’s most popular presents to its Gifts store, Facebook Gifts could boost sales and split the 30% margins with Apple. What the actual revenue split is remains a secret. We do know there’s no shipping costs for either partner to pay for, and Apple typically taxes content and app creators a 30% to be sold in iTunes. Read the full story at TechCrunch.