Was I the only one who was totally unshocked by him being black? I guess I never really thought about him much at all, being a basic name on a page until HBP (I presumed he was a boy because I've only ever heard the name applied to boys in this country, and that he had dark hair because of the last name.) It just seems the general consensus is either what you mentioned or else 'OMG JKR just totally PWNED fandom with such an unexpected twist, confronting us with our own racism and showing us how skin colour is no issue in the Potterverse, just endless boring double-standards magical blood'. Eh. Not so much. Speak for your own assumptions, people.

Is this another woman who's bad because she's sexually aggressive?

Can't trust a beautiful women who's been married a lot, naturally.
And of course she's marrying for money, rather than having a job or talent. Her beauty is her job! How very Ginny of her. Oh, well, you know what we women are like, desperate to suck men dry.

Perhaps all the Slytherin boys adore her.

I imagine Crabbe and Goyle to be in fits of joy, visiting between her house and Narcissa's. I hope those two have ladies nights out, what with Lucius in prison and Ms. Zabini being a perpetual widow.

Perhaps the rumors about their death are just that, vicious rumors.

Naw, you can always trust rumours heard by Gryffindors. It's those evil ones written in the Prophet you can't trust!