On occasion, I will get a phone call from someone who wants to buy a domain name I own. While I do think making a phone call is far better for domain buyers to get in touch with a domain owner, I would recommend that domain owners work out their deals online in emails rather than over the phone.
The primary reason is that you can respond to the inquiry on your own time, allowing you to research the value of your domain name and do some research on the buyer. Additionally, you don’t have to make a snap decision over the phone if you hadn’t intended to sell the domain name.
The secondary reason is that your emails are all trackable. You can easily archive offers for domain names, allowing you to remember what offers came in the past. Additionally, if you have no intentions of selling the domain name now, you can have the person’s email and email address readily accessible when the time to sell comes. It’s much easier to lose a phone number and/or forget who a person in your phone book is after a period of time.
It’s in the best interest of a domain owner to work out a deal online.