If word of mouth is important, it is usually better to have a dot-com web address. IMO, the two additional rules are to make it memorable and make sure people c

If word of mouth is important, it is usually better to have a dot-com web address. IMO, the two additional rules are to make it memorable and make sure people can easily spell it. Other than that, don't obsess over a descriptive name. ps, if you go with zzzz.app, make sure you can also get zzzzapp.com