In this edition of the WebAgency search and social news roundup, Google rolls out message reporting metrics, confirms a core algorithm update and more.

• Google’s Broad Core Algorithm Update Examined (Search Engine Journal)
• New Ways to Harness the Combined Power of Google and YouTube in AdWords (Google Inside AdWords Blog)
• Google Image Search Adds Captions to Search Results from Your Page Titles (Search Engine Roundtable)
• How to Plan and Create Evergreen Content for SEO (Search Engine Watch)
• Chat Rate Is the New CTR for AdWords Message Extensions (Search Engine Land)