This is probably the wrong place to mention this, but idunno:
I did a search in the docs of pg_standby and was presented this link:
Based on your search term, we recommend the following links:
* http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pg_standby/
but that link gives a 404:
Not Found
The requested URL /cvsweb.cgi/pgsql/contrib/pg_standby/ was not found on this server.