Going beyond shady sales practices and bad customer service, I've actually had several registrars (and/or individual registrar employees) try to steal domains from me in the past, In some cases, I had to resort to lawsuits to get my domains back. I own a few thousand domains (no, I'm not a domain squatter), and all of the domains I've had trouble with were very valuable. The worst instance was over a two-letter .com…
How do you own several thousand domain names without being a squatter? Also interested to hear any details about how they tried to steal domain names from you.
I HAVE sold several domains, but usually only ones that I find a better domain for, or ones where I have abandoned a project. A tiny number of the 'empty' domains were reserved for my existing companies that are not accepting new clients...just to hold onto IP. I would develop them if we started accepting new clients. I have also bought a few domains with the sole intention of reselling them quickly, but only when I had a buyer in mind for a brandable name that had not been registered yet or for a very unique/rare domain that I had gotten indirectly via corporate acquisition.
2. In the simplest case, a registrar employee turned off my transfer block and then moved my domain directly into his account. He also disabled my email alerts.