That's because Alice_LJ is a spammer. He/She has registered just under 200 new message board accounts since 30-July-2008, according to Google. They manage to get past the initial anti-spammer safeguards built into vBulletin-based sites using some sort of bot. Some sites require a minimum number of posts from newly registered members before they can post html or site links. The spammers have now caught on to this limitation and will post random meaningless replies to get their post count up. I banned Alice_LJ on my site (which shall remain nameless since it is OT).