LDAP service lookup

Hello!

I've just accidently stumbled upon
http://www.postgresql.org/docs/8.2/static/libpq-ldap.html
and thought "hey, this is what my friend, a huge BigRDBMS fan, was
telling me about.

Now that I've read it, I think it could be very useful in an
enterpisish sort of way
(addressing databases as "services" not as "host+port+database name"), and
it could be used as an advocacy lever ("you think LDAP directory with
DB-services
is neat? PostgreSQL already has it").

Then again, apart from libpq I don't see it mentioned anywhere. I would like
to have [1] a Setting-up-LDAP-for-PgSQL-HOWTO. I would like to use it
from DBD::Pg (I _guess_ its a matter of DBI->connect('dbi:Pg',
'service=foo', ...);,
but its a wild guess). And I would like to use it from psql (this is a tricky
part, since \c expects DBNAME, not a service name, and using both in
this context would introduce ambiguity).

Could anyone of you tell me about your setups if you use LDAP for
this? How do you feel about it? Which LDAP server do you use?

Regards,
Dawid

[1]: I may get to writing one, as it intrigues me.