Dear Mr. Beall,
This is an extremely interesting and useful post. I appreciate the time and effort you have spent listing all the things to look out for. Clearly, not all criteria will apply all the time, but having read this, I can definitely say I’ll be more watchful.
Incidentally, shortly after I read this post, I stumbled upon UNAIS (http://un-a-i-s.ch/) and sensed alarm bells on browsing the site. The purpose of this journal is to publish papers that have been rejected, and this seems outrageous in principle itself.
It claims to be a “new journal” and does not list any clear instructions for author contributions. Neither does it have any contact information displayed; there’s only a “contact form” that requests your details. Sure makes me want to tread with caution.
I was wondering if you, or any of the readers here, have come across this journal or have views about it.