Posting at meta solely because I couldn't figure how to make it into a custom flag message (plan to further flag involved posts for mod attention referring to this post).
This user account has just posted three similar "questions" at different sites:
All three have quickly received "answers" from unregistered users linking to the same resource (bloggingtechniques.com).
As far as I can tell, this is spam (astroturfing). Could something be done about this?