I don't know about GTIs, but the Saab world is well-served by saabnet.com.
The problem is, it's a quasi-commercial site sponsored in part by Saab USA,
and well-moderated--read censored. Most of the posts here on vanagon.com
would disappear from saabnet in an hour. And woe unto he who insults the
mighty Saab! Ask how I know. What I like about the vanagon.com list is
exactly the freedom of it, the fuzzy logic, the open quality, the off topic
part--which is perhaps where this thread is going.

What was your question, again?