In June 2018, we're making changes to the native social capabilities in SharePoint Online

John Wynne Thank you for your feedback, it is greatly appreciated.  Deprecating functionality on-premises or in the cloud is not a decision we take lightly and your feedback goes a long way to ensuring we're doing so in the best way possible with the right communications.  A Message Center post accompanies this information and should be reaching tenants worldwide within the next 24 hours.  On the deprecation itself, for existing tenants the core change will be making read-only the public feed capability in the product as a legacy artifact of native SharePoint social capabilities.  Site feeds will not be impacted through this change.  We'll also be working on helping to rationalize this change through guidance that will help compare the capabilities designed to replace this functionality now and through May.  Please let me know if you have any questions.