Pretty much seen it coming when the new CEO came in and removed the words "Transparency" and "Always Free" from the official marketing.
I have too many apps on my phone so I haven't looked for a mobile version. Using it from web on both phone and desktop.
Brainstorming for writing. I get some great ideas for worldbuilding and novel ideas laying down preparing to sleep.
Being a ghost is impossible, at least in our era. Gone are the days where you could live through life without a digital footprint (inc. personal/group photos)
Depends if you outsource your thinking or if you use it as a tool. This is a human problem, not an AI problem.