https://www.reuters.com/article/snap-results/snap-shares-drop-25-as-revenue-falls-short-apple-privacy-bites-ads-business-idUSKBN2HB2JV >(Reuters) -Snap Inc on Thursday fell short of Wall Street estimates for quarterly revenue as the owner of photo messaging app Snapchat said privacy changes implemented by Apple Inc on iOS devices hurt the company's ability to target and measure its digital advertising.