online handle; screen name; user name
Colloquial term for a persistent online identity, especially on forums like 2ch where most users post anonymously. Contrasts with anonymous posting.
On that bulletin board, few people use a fixed handle.
user with a handle; non-anonymous poster
Refers to a person who posts under a consistent name rather than anonymously. Often used in contrast to 名無し (anonymous).
There was only one non-anonymous poster in the thread.
Compound of 固定 (fixed) and ハンドル (handle), referring to a persistent online identity. The term arose in Japanese internet culture, particularly on anonymous forums like 2ch.