since 2024.

https://www.the-independent.com/tech/bots-internet-traffic-ai-chatgpt-b2733450.html

There are some pretty sophisticated bots cruising bsky.  One type that really caught my eye was what I call a 'suck-up bot.' It picks a point or two out of a user's post, uses ai to make an in-context reply, and makes a sycophantic comment about the OP.  Someone happened to catch one with a %variable% exposed and posted it.