Rosetta - this is not a closed shop.
Anybody can access this site without logging in, joining, providing proof of id... It is a public site. It is impossibe for a site like this to be any different, unless people register with a credit or debit card to gain access.
And then it would be a totally different place to what it is now.
Think of it as somebody writing to an agony aunt in a newspaper or magazine - they know if they want an answer the question will be published and read by anyone.
It is exactly the same. I really cannot believe that many users on this site do not realise it is open to the public.
And really, google is irrelavent. If I didn't use this site I wouldn't be able to google dot.hawkes or terambulan - it would be totally meaningless to me.