They did have one, actually

Christian Schneider’s 1916: The Blog wonders: What if people 100 years ago had social media?

Christian writes a book of humor, lot of fun. What if the headlines of 1918 were made into blog posts.

Christian should know that by 1918 we had nearly completed phone networks over metropolitan areas, we were commonly calling each other.  The effect of the sudden appearance should have been transformative and disruptive. It should have caused extreme sock market volatility, upended centuries old monarchies, and defeated oligarch rulers.

I look, now and then, but not closely.  The research is important, someone should take a close look at the impact of phone networks around that period.

Christian should have spotted that many of the headlines looked out of tune, at the time. News written in the old, complete style; when the new format would have been to update already reported news. Newspapers would have been adapting the new format.  Telephone reporting becoming more common, for example and a much shorter news cycle, possibly a proliferation of small specialized news prints. Remember the movie stereotype when all the news reporters rush the phone booths on a news story?  I dunno, someone needs to do this work.  Theory predicts a catastrophe here, a WW1, and that needs confirmation or denial.