I used it on AIROW (Q&A site, kinda like Fluther). Some time after AIROW shut down, I was told to come join Fluther.
I figured it made the most sense to keep the same username, for the sake of my fellow AIROWians recognizing me.
I chose Sarcasm in the first place because I’m a sarcastic person, surprisingly enough. I’m kind of getting tired of this name. but I don’t know what I’d want to use instead of it.