There was a moderately-active mailing list for the SQLite JDBC driver on Google Groups, until it disappeared without warning or notice around October 2008.
The group had nearly 200 active subscribers and held on-topic technical discussions. The gmane archive provides ample evidence of this.
I'm sure the group's disappearance was entirely accidental, but it is surprising, given that my experience with other Google services has always been positive.
Update: The group reappeared months later, just as unexpectedly as it disappared. I have already created another mailing list, so I have left it be.