Perhaps the biggest consideration when choosing a brand name is unfortunately the least fun. It’s finding a name where you can actually still secure the domain name. Domain names have been hard to come by for some time now thanks in part to the dramatic increases in website volume, and partly because their scarcity has encouraged domain squatting.
Ideally you should be aiming to get a .com domain name as antyhing else will cause come confusion. Second best are .net domain names, but even here you will always wind up with a percentage of users accidentally going to the .com. Another common approach is to find domains ending in country level endings that look like they are part of the word. The site that made this practice mainstream was Del.icio.us which tellingly eventually also purchased Delicious.com.
Courtesy of: Collis Ta’eed