AI is learning from what you say on social media. Are you OK with that?

CAMBRIDGE, Mass. (AP) — Post a comment on Reddit, answer coding questions on Stack Overflow, edit a Wikipedia entry or share a baby photo on your public Facebook or Instagram feed and you are also helping to train the next generation of artificial intelligence.

Not everyone is OK with that — especially as the same online forums where they've spent years contributing are increasingly flooded with AI-generated commentary mimicking what real humans might say.

Some longtime users...