Thought this might be useful for others.
I'm commonly doing searches against the documentation, mailing lists,
pgforge/gborg, etc. almost daily for PostgreSQL specific items.
Google is nice for this, but you have to tweak your site: search to get
just what you want. There is also the helpful pgsql.ru.
Found Google Co-op and created a custom search engine much the same as
pgsql.ru.
http://www.google.com/coop/cse?cx=004235346677000918633%3A3pxavm78ixo
Searches only PostgreSQL sites.
Its also easy to create your own CSE and add/remove sites in the search
to whatever you want (takes all of about 5 minutes).
Weslee