Some of these spammers are an odd breed indeed. Not sure they are Trolls though because they get kicks trolling for replies and reactions by posting stuff that isn't sincere but generates heat. Around here a good troll topic would be:
PJ is a great film maker who made a dull book exiting or
Balrogs have wings, dumbass. But I can't see how anyone could find it amusing to post the dull and barely literate posts of today for example. And for us it's mildly annoying but hardly something that raises the blood pressure. My guess (as a computer illiterate) are slightly more sophisticated spambots, first posing as a serious poster (and Danielle Steele fans apparently
) without trying to sell anything, hoping to remain unnoticed and then... uhm... gets down to some sort of dirty business no doubt...