Full textsearch & gist

Hi,

I'm experimenting with tsearch2. It works very good, but i have a few
questions:

- Is there a tsearch maillingslist ?

- How can i create a muticolumn index of an date and a text field, so i for
example can textsearch in de last few days.

CREATE INDEX test_ix ON test USING gist(date,tsvector);
ERROR:  data type date has no default operator class for access method "gist"

- Does someone now how i can select the most used words, so i can create a
stop file.

Regards,
Ferdinand