If you're a writer and you haven't had the opportunity to check out the Writer Beware® website and blog, you might like to do so. Writer Beware® is sponsored by the Science Fiction and Fantasy Writers of America and other professional writers' associations and is devoted to bringing writers the latest news on publishing, as well as information on literary scams and schemes. There is also a Facebook page which contains articles of interest to writers and provides a forum for discussion.
An example of a recent post concerns the need for an online licensing system for copyrighted works. It can be found at http://accrispin.blogspot.ca/2015/04/finding-authors-importance-of.html.
Writer Beware® also publishes a "Thumbs Down" list of publishers and agents that have been the subject of numerous complaints. Please see http://www.sfwa.org/other-resources/for-authors/writer-beware/thumbs-down-agency/.