A few years ago I had Dyn hosting my DNS records for a website that had Amazon affiliate links. For some reason, one day someone at Amazon mistook those links for spam and contacted a service called MarkMonitor. MarkMonitor contacted Dyn and Dyn took down my account, shutting off access to the website. Without ever contacting me.

I was able to get my account reinstated after clearing the whole thing up with MarkMonitor and Amazon. I then removed all affiliate links and moved my DNS hosting elsewhere.

Never using Dyn again.