Reviewing the first posts queue, I run into this question. The last answer seems to have a link for the Firewall keyword, which leads to a commercial firewall (and doesn't have much to do with the answer, by the way, as she's talking about firewalls generally and not about this one concretely).
After opening the author's profile, I saw she has her profile's URL set to the same domain where the link in her answer leads (and personally where I think she works).
Is this considered spam or am I being too rigorous?