If you're looking for the companion website of the books Statistik für Sprachwissenschaftler and Statistics for Linguistics with R by (Stefan Th. Gries), this website used to be part of this Google group but has now been moved here. (This is because Google groups has ceased to support the pages and files functionality.)
If you're looking for the companion newsgroup of said book, you're in the right place: 'apply' for membership in the group (to avoid spammers) and post away.