What does GPT-3 "know" about me?

I've been paranoid about posting anything about my personal life publicly since a bruising experience about a decade ago. My images and personal information were splashed across an online forum, then dissected and ridiculed by people who didn't like a column I'd written for a Finnish newspaper. Up to that point, like many people, I'd carelessly littered the internet with my data: personal blog posts, embarrassing photo albums from nights out, posts about my location, relationship status, and political preferences, out in the open for anyone to see. OpenAI has provided limited access to its famous large language model, GPT-3, and Meta lets people play around with its model OPT-175B though a publicly available chatbot called BlenderBot 3. I decided to try out both models, starting by asking GPT-3: Who is Melissa Heikkilä? When I read this, I froze.