Hello, Jim-san. :D
I came from minecraft board( http://wktk.2ch.net/minecraft/ ).
We held a vote and discussion about the name field at these thread.

http://kanae.2ch.net/test/read.cgi/vote/1412597757/
http://wktk.2ch.net/test/read.cgi/minecraft/1411803511/

And, "名無しのスティーブ" was chosen.
Could you change BBS_NONAME_NAME,
"Creeper@ローカルルール議論中" into "名無しのスティーブ@ローカルルール議論中" ?