Comment 5 for bug 86253

I'll change the code to stop creating Ubuntu WikiNames for new accounts, but that won't be of much help because we already have millions created, so I think we also need to do one of

1. delete the ones that don't exist on the wiki
2. stop displaying them on a person's page
3. tell web crawlers not to follow them [1]

[1] rel=nofollow doesn't seem to be interpreted that way by googlebot, unfortunately: http://en.wikipedia.org/wiki/Nofollow#Interpretation_by_the_individual_search_engines

Any suggestions?