Yes. I have about as many roleplaying journals as you do (actually, I've lost count over the years!) and only the journal I started 2007-03-02 has that starter post.
In case you're curious, the post is headed "Welcome to LiveJournal" and contains a set of instructions that aren't copying properly here. The coding of the post reads [lj-replace name="first_post"]:
no subject
In case you're curious, the post is headed "Welcome to LiveJournal" and contains a set of instructions that aren't copying properly here. The coding of the post reads [lj-replace name="first_post"]: