http://www.techcrunch.com/2007/09/04/googlers-get-kinky-on-wikipedia/

It appears that people within the Google IP Range are just oozing with concerns about sharing their SEX expertise on WikiPedia

They may all not be Googlers on the job ----- but rational thinking has never been that important to what catches the public imagination – or equally as important – the Digg Homepage!!

But if they ARE discovered to be Googlers on the job, heads will roll (pardon the pun)

  

Is it at all possible these users were outside Google but using the Google Web Accellerator? Guess not?
Also wonder if there's any other way e.g. a guest can visit Google or use Google wifi and be seen as having a Google IP from the outside.

PS: Interestingly enough, logging in to Wikipedia with a username might have given you *more* anonimity, not less, in this case... because the IP address (and thus corporation) would have been hidden, unless you chose to divulge that info on your Wikipedia profile page.