[pgsql-advocacy] Does Google like old versions of the Postgres docs?

Hi,

is it just me, or does Google like old versions of the Postgres
docs?

I seem to get a first hit pointing to 9.1 very often. Just now I googled

   postgres earthdistance

and got a pointer to the 8.3 (!) version, even.

Any thoughts about why that's happening?

Bye,
Chris.