BlueSky appears to be suffering technical problems after an exodus of users from X, formerly known as Twitter.
The issues come after Elon Musk, X's owner, announced that the site would be changing how its "block" button works. That option previously allowed users to hide their profile from certain accounts - but will no longer do so.
In the wake of that change, X competitor BlueSky announced that it had seen more than 100,000 new signups. But it appears to be struggling to cope with all of those new users, with many reporting issues getting online and logging in.
"welcome to the 100k+ people who have joined Bluesky in the last 12 hours!!!" the site's official account had posted earlier on Thursday.
But, hours later, hundreds of people reported problems getting online at tracking website Down Detector.