context... I've seen either usernames with it or in signatures, I searched on this forum and found more hits, there is also a tool called Ninjatrader.
I think the post from mk4 is good enough, thanks for your explanations
I think the post from mk4 is good enough, thanks for your explanations
As far as I know, the word "ninja" doesn't have a special meaning in the crypto world. However, in slang, it is often used as a synonym for an expert in a particular field, for example: marketing ninjas; ninja programmers (as hatshepsut93 has already mentioned). So if someone refers to themselves as a "ninja", they likely want to emphasize that they are very skilled at what they do. But may not be always the case.