She's been doing that since the very beginning. I don't know if she "posts", but this is one of her favorite sites.
Can you imagine how screwy she'd be if she spent her time cruising DU? No way! She's not terminally stupid ~ evil maybe ~ well, evil, probably ~ but she knows where the analysis she'll need to deal with is on display 24/7
What makes you think she lurks here? Some of her staffers might, but the queen herself?