Prevent Google from spidering usernames?
 

Is it possible to prevent Google from accessing usernames on our vBulletin sites? I'm getting vexed at these overly-paranoid people requesting their accounts be deleted because... GASP... they found their (non-identifying) username on Google. Sheesh, so what, really? One guy even emailed me a week after I deleted his username and complained to me that their username still showed up. Yeah, uh... what am *I* supposed to do about that? I don't sit at Google's controls. :confused:

Anyway, is there any method to address this with an anti-username spidering file or even mod without compromising the rest of the site being available to googlebot? I realize this may be a vbulletin.org matter, but so far have been unable to find anything over there. I will look again.