We have launched the Debian PostgreSQL Packaging Project at http://pkg-postgresql.alioth.debian.org/. We are a group of people interested in maintaining Debian packages related to PostgreSQL.
Obviously, Debian already contains a large number of packages related to PostgreSQL. The idea behind this project is to get the involved maintainers together, concentrate resources, exchange ideas, and allow more people to get involved in small ways. See our web site about participating.