what is the significance of the black "OP" sashes that appear across some avatars

[wolvenrogue]

what is the significance of the black "OP" sashes that appear across some avatars and how are they activated or removed?

 

[Serena Moon]

Fairly sure it just means it's the Original Poster of the thread? I could be wrong though.

 

[tsukasa]

Fairly sure it just means it's the Original Poster of the thread? I could be wrong though.

Yes, it's simply "Original Poster" (the user which started the thread).

 

[captain_bond]

Fairly sure it just means it's the Original Poster of the thread? I could be wrong though.

Correct.