Well, seems that I am also under S.P.A.M. attack. One of my posts, linked to David Armano's blog is being fired by nasty comments attack. I am (also) trying to figure this out. For the moment, I had to turn the Typekey identification system on. I will check with Typepad the best way to block the attack and still remain as open to comments as possible. Sorry about the inconvenience.
"I'll be back!"
Sébastien Le Prestre, Seigneur de Vauban and later Marquis de Vauban, inspired me when I saw a documentary on his ingenious techniques to protect french fortresses. Aside to developping techniques to protect, he also conducted sieges. I just thought about him when trying to find a way to stop the S.P.A.M comments attack. Complicated thing on a blog is to block unwanted comments and still remain open for other comments.
Idea is simple : don't let a direct open path between you and ennemy line of fire.
Don't know if this is going to work, but at least I can now reopen my comments. : )