She has, however, been using the nick on IRC since about 1995.
There are two reasons for this.
Firstly, her initials are CAS.
Secondly, she fancies herself as a prophetess of doom that no-one listens to.
She is also occasionally known as [[Sesquipedality]].
In Maelstrom, she used to play Amelie Dubois, whom she was surprised to discover that a large number of characters really really liked. Given that the character was an attempt to create a very likeable persona, this can be regarded as a success.
Her current character is Andrea Popova, whom she does not envisage other characters liking quite so much.