This is something I really missed with Yammer, we used to have IFTTT setup to auto post blog posts from key UC blogs via their RSS feeds. It was really helpful to keep up with the latest news and extend the conversation.
I just stumbled across the fact that Microsoft Flow (Kind of Microsoft’s IFTTT for Enterprise.
It’s pretty self explanatory, you sign in with your Office365 account, auth Yammer add your RSS feed:
I recommend not having the summary, as Yammer doesn’t do a great job of rendering the posts. So I go with Feed title and Primary feed link