Right, your posting hearsay is much better than my asking questions.
Here are some answers to your questions: I don't view any company as a competitor; I am an individual writer. Companies are either potential employers or ex-employers to me. I have a gut feeling that unemployedprofessors falls into the latter category, which is why I am asking questions about them. I have worked for a lot of people in this industry, and sometimes they have had different names.
Something about the site rings a bell, and it stinks, as far as I'm concerned, that they're advertising here at all-- when 8/8 of the last ads were for scams. I never claimed those threads constituted proof. I posted the threads to background my open question. I am still working on the answer myself.
Instead of going around assuming you know everything, you should try asking some questions. There are a lot of people on this forum who are exponentially more experienced in this industry than you are. If I were a noob who didn't even know enough not to promise grades, I would view that as a resource, not a series of targets for my "internet bigmouth" problem.