The "Google Webmaster Help Bionic Posters" names those who "stand out as exceptionally active, helpful and friendly". Here's the list:

● webado (Christina)
● cass-hacks (Craig)
● Aaron Pratt
● Robbo (Vince)
● dockarl (Matt James)
● MrGamma (James)
● Phil Payne
● abracadabra (Tim)
● Cristina
● JLH (John Honeck)
● IceGiant (Sasch)
● seo101

... and at the end of the page, you can see who created the list: no other than JohnMu. blogoscoped.com/forum/posts-by ...

[Thanks TechForNovices.com!]

Reminds me of the "gurus" on the Google Gadgets API group. They picked the top posters and labeled them gurus to help answer others' questions.

groups.google.com/group/Google ...

That was a nice surprise, thanks for pointing it out Philipp