Long time ago, I’d used twitter.com/mloskot account which I removed. Someone had taken it over and when I decided to come back to Twitter, I had to register as twitter.com/mateuszloskot.
Today, Pantera noticed mloskot
account has been released - someone apparently has got fed up with twitting :) - so I have switched back to my old account name.
It seems Twitter is pretty clever and preserves all my following/followers and status settings. Sweet.