It's not just threads. It looks like a whole forum has dissapeared. There used to be two at the top but now there is just 1 - announcements. I know that there was quite a few unhappy customers who were venting their frustrations in this section, but really, to remove it says alot about WA as a company.
I'd be interested to hear what Web Assists plans are for the future. Is there a roadmap? Are you selling out? Do they know who their customers are (i.e developers or web site owners looking for pre-built solutions)