What I did was remove each one of those "about" spam. Some spammers use them, others use signatures, others use "information" field, and whatnot. I remove them, and ban the spammer. I think about the future when I do this, I don't want to import and having to re-do all the spam proceedures if I have to import this site over...
That's the way I think.
Just look at each profile, and not paying attention to the xenUtilies. Some of my legit users use the status update system, and sometimes they get into the same moderation system as xenUtilies. I would just be cool, and if I find the spam in places I don't want the spam to be found...I just remove them and ban. That's it.