It's suddenly became lots of "What X likes" and output from the few corporate type pages I like (charity or political party or activist) and not enough my friends status updates (which is what I most want to see).
Instruction here how to customise newsfeed.
But I fail at 2nd hurdle, I don't see any option to "Prioritise who to see first". Am I stuck with a newsfeed I don't like? What am I doing wrong?