As someone who uses websites like these to trash coworkers. God yes use an alias to protect your name. It's good to change names or accounts every 6 months or so.  Post annomonoysly if you can. If you want to post some thing really bad or inappropriate create an email to ditch immediately after the post. I've been doing this for years. It saved my @$$ a couple times. Especially if you're in a job where you are not union protected. Never post reviews under your real name. Stuff like this can be considered slander and harassment. So yes do take extra percautions when posting to sites like this. Instead of saying stuff that would give away your store and identity word it differently so it doesn't. Write a similar story and use jo and jane instead of real name.