Yahoo sent out email notifications to every group owner and member. I got mine on November 1st.
Yahoo is definitely handling this badly: they should have offered an export tool, given a longer window, and been clearer in their messaging. But the claim that they didn't notify people (and just put the information up in a place no one would see) is wrong.
Yahoo is definitely handling this badly: they should have offered an export tool, given a longer window, and been clearer in their messaging. But the claim that they didn't notify people (and just put the information up in a place no one would see) is wrong.