Allrighty my baby darlings, It is time to put on your big kid writer pants and learn to research for yourselves. It doesn’t matter if you’re researching literary agents, publishing companies, editors, copy editors, or whoever you happen to need. Each and every time you need to do your research and to find out the reputation of the person you’re considering. Every. Single. Time.
Stuff happens and people change. Someone who you researched two years ago may have had a life changing experience. Instead of being a literary agent, they might be working with a publisher. There could have been a come to Jesus moment and they moved to Australia to pursue their dream of being a professional surfer. Maybe they fell off a mountain and landed on their head and now only represent talking pony erotica.
You never know. Any reasonable person will check before they click send on that email. So here are links to reliable websites for writers.
For almost anything and general good advice: http://thewritelife.com/100-best-websites-for-writers-2015/#.lgjufd:QC1F
For an agent search: https://querytracker.net/
For editors and publishers: http://www.pred-ed.com/
For general advice on writers, writing, and the writing community: http://absolutewrite.com/