> Christian should stand up to people like this woman and not give in under empty legal threats.

I think you're missing the point. Clemmensen made it clear when he briefly discussed this matter on the Scoreboard that this woman is clearly a long-time nuisance to him and he doesn't want to deal with her anymore than he is forced to. I'd guess that he complied with the terms of her threat simply to make her go away. Nobody disagrees with you about the legality issues. I actually posted in that thread in question and there was nothing amounting to libel anywhere in the whole conversation. Most of the thread wasn't even about her. The only person really attacked was Clemmensen himself (as usual).

If you want to feel happy about this situation though, notice that Clemmensen takes subtle digs at people he doesn't like in his reviews (well beyond the George Bush jokes). What he wrote in the "300" review was unmistakably about the woman we're talking about. He also made a point of calling the character of Ariel a "dimwit" in his "Little Mermaid" review. Both lines are perfectly legal of course, because they don't mention his bothersome former partner by name and only a small handful of older readers will know the connection.