smallcompany, I'm going to jump in here and answer your questions, as I know that GAA has a lot on his plate today - and probably won't be by till later in the day.
The short story: GAA will be posting in this forum only, and will be primarily focusing on answering questions about GA as used by AdWords advertisers.
For the next couple of days, maybe, it seems like a good idea to simply post questions in this thread.
In the near future, it seems like the best idea to start new threads in this forum, which have subject lines that make it clear the topic pertains to GA.
GAA and I both aim to follow WebmasterWorld's guidelines (as called out in the charter of this forum) which specifically request that threads or posts not be directed to a Google representative - so I'd avoid saying something like "GAA, please answer" in the subject line. ;)
Excerpting from this forum's charter:
Basically, GAA will be stopping by this forum as time allows, and scanning for threads that are clearly in his ballpark. I seriously doubt that he will be reading all threads, trolling for buried questions that pertain to GA. On the other hand, when I see such 'buried' questions, I'll do my best to call his attention to them.
Hope that helps clear things up. Good questions.