Back then, if you owned a decent domain name, you could generally sit back and wait for the buyers to come to you. Nowadays, you need to be much more proactive in your approach if you want to successfully sell your domain name(s).

At the same time, never discount the possibility of "walk-in" buyers; in other words, potential buyers coming across your domain name during a search, and enquiring about its availability.

To this end, it's essential that you keep your Whois record (the record of ownership of your domain name) updated at all times, and free from errors. You just never know who might be trying to contact you!