I have heard that you can register domain names with Google, but I don't know how it works. Does Google have its own domain registration company, or does it act as a middleman?
I am aware that once you register a domain name, it's yours till it expires and you decide not to renew the domain. So, why should you lock your registered domain?
Do you think it is worth it to get your domain professionally appraised and obtain a certified domain appraisal? Does it really matter for your potential buyers?