> All of your posts with that account were about one thing, which happens to be the same thing your company is selling. That's using questions as a promotional device, not asking questions out of intellectual curiosity. This was obvious enough that users emailed to complain about it.

Just because I'm interested in a specific topic does not mean that I'm "not asking questions out of intellectual curiosity". I wanted to start discussions about those topics - and if that's not allowed wouldn't that mean that nobody from Google may ask about search algorithms or nobody from YCombinator mask ask about Startups?