I flagged this answer, and questions by this user on SU, SF, UL and here - he has had a clear pattern of similar posts with minimal content, linking back to the site. This sort of breaks the self promotion rule and seems flaggable to me.
I only worked this out cause I remember seeing the domain somewhere else, and finding this through a SE wide search. The decline reason is " declined - flags should only be used to make moderators aware of content that requires their intervention "
Well, I'd consider this spam, and as such chose to flag it. If it isn't, at what point do we consider somewhat pointless SEO attempts (since new users have nofollow tags on links) to be spam and not?