Pros
Wide variety of topics to write about. Provided very detailed instructions on what was expected, and provided a template to copy and paste articles making it easier to ensure each article was meeting the basic requirements. The upper management team was willing to hear me out when I had a conflict with an Editor (which was rare, as I would usually just bite my tongue and do as they requested, even if it was wrong). Overall, good experience considering the services the company is offering to clients.
Cons
It's a writing-mill, it serves its purpose. Anyone who has worked in this venue knows the money is going to be really low. Sometimes the editors were just WRONG, but didn't want to admit it. There's a difference between US-English and UK/Canada-English, especially in terms of punctuation. In most cases, US-English requires punctuation inside quotation marks--not outside. Other than that, there are no cons.